change some code

@@ -44,12 +44,12 @@
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     },
     "axios": {
-      "version": "0.18.0",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.18.0.tgz",
-      "integrity": "sha1-MtU+SFHv3AoRmTts0AB4nXDAUQI=",
+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.18.1.tgz",
+      "integrity": "sha512-0BfJq4NSfQXd+SkFdrvFbG7addhYSBA2mQwISr46pD6E5iqkWg02RAs8vyTT/j0RTnoYmeXauBuSv1qKwR179g==",
       "requires": {
-        "follow-redirects": "^1.3.0",
-        "is-buffer": "^1.1.5"
+        "follow-redirects": "1.5.10",
+        "is-buffer": "^2.0.2"
       }
     },
     "bcrypt-pbkdf": {
@@ -71,9 +71,9 @@
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
     },
     "combined-stream": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
-      "integrity": "sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==",
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
       "requires": {
         "delayed-stream": "~1.0.0"
       }
@@ -92,11 +92,11 @@
       }
     },
     "debug": {
-      "version": "3.2.6",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
-      "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
       "requires": {
-        "ms": "^2.1.1"
+        "ms": "2.0.0"
       }
     },
     "delayed-stream": {
@@ -134,11 +134,11 @@
       "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
     },
     "follow-redirects": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.7.0.tgz",
-      "integrity": "sha512-m/pZQy4Gj287eNy94nivy5wchN3Kp+Q5WgUPNy5lJSZ3sgkVKSYV/ZChMAQVIgx1SqfZ2zBZtPA2YlXIWxxJOQ==",
+      "version": "1.5.10",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
+      "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
       "requires": {
-        "debug": "^3.2.6"
+        "debug": "=3.1.0"
       }
     },
     "forever-agent": {
@@ -156,6 +156,11 @@
         "mime-types": "^2.1.12"
       }
     },
+    "fs": {
+      "version": "0.0.1-security",
+      "resolved": "https://registry.npmjs.org/fs/-/fs-0.0.1-security.tgz",
+      "integrity": "sha1-invTcYa23d84E/I4WLV+yq9eQdQ="
+    },
     "getpass": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
@@ -189,9 +194,9 @@
       }
     },
     "is-buffer": {
-      "version": "1.1.6",
-      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
-      "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w=="
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.3.tgz",
+      "integrity": "sha512-U15Q7MXTuZlrbymiz95PJpZxu8IlipAp4dtS3wOdgPXx3mqBnslrWU14kxfHB+Py/+2PVKSr37dMAgM2A4uArw=="
     },
     "is-typedarray": {
       "version": "1.0.0",
@@ -246,16 +251,16 @@
       "optional": true
     },
     "mime-db": {
-      "version": "1.38.0",
-      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.38.0.tgz",
-      "integrity": "sha512-bqVioMFFzc2awcdJZIzR3HjZFX20QhilVS7hytkKrv7xFAn8bM1gzc/FOX2awLISvWe0PV8ptFKcon+wZ5qYkg=="
+      "version": "1.40.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.40.0.tgz",
+      "integrity": "sha512-jYdeOMPy9vnxEqFRRo6ZvTZ8d9oPb+k18PKoYNYUe2stVEBPPwsln/qWzdbmaIvnhZ9v2P+CuecK+fpUfsV2mA=="
     },
     "mime-types": {
-      "version": "2.1.22",
-      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.22.tgz",
-      "integrity": "sha512-aGl6TZGnhm/li6F7yx82bJiBZwgiEa4Hf6CNr8YO+r5UHr53tSTYZb102zyU50DOWWKeOv0uQLRL0/9EiKWCog==",
+      "version": "2.1.24",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.24.tgz",
+      "integrity": "sha512-WaFHS3MCl5fapm3oLxU4eYDw77IQM2ACcxQ9RIxfaC3ooc6PFuBMGZZsYpvoXS5D5QTWPieo1jjLdAm3TBP3cQ==",
       "requires": {
-        "mime-db": "~1.38.0"
+        "mime-db": "1.40.0"
       }
     },
     "mongodb": {
@@ -279,9 +284,9 @@
       }
     },
     "ms": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-      "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
     },
     "oauth-sign": {
       "version": "0.9.0",
@@ -299,9 +304,9 @@
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
     },
     "psl": {
-      "version": "1.1.31",
-      "resolved": "https://registry.npmjs.org/psl/-/psl-1.1.31.tgz",
-      "integrity": "sha512-/6pt4+C+T+wZUieKR620OpzN/LlnNKuWjy1iFLQ/UG35JqHlR/89MP1d96dUfkf6Dne3TuLQzOYEYshJ+Hx8mw=="
+      "version": "1.1.32",
+      "resolved": "https://registry.npmjs.org/psl/-/psl-1.1.32.tgz",
+      "integrity": "sha512-MHACAkHpihU/REGGPLj4sEfc/XKW2bheigvHO1dUqjaKigMp1C8+WLQYRGgeKFMsw5PMfegZcaN8IDXK/cD0+g=="
     },
     "punycode": {
       "version": "2.1.1",

@@ -9,7 +9,8 @@
   "author": "Yeonjun Kim",
   "license": "MIT",
   "dependencies": {
-    "axios": "^0.18.0",
+    "axios": "^0.18.1",
+    "fs": "0.0.1-security",
     "mongodb": "^3.2.6",
     "slackbots": "^1.2.0"
   }