api docs

+# AWS Lambda API
+[https://9davbjzey4.execute-api.ap-northeast-2.amazonaws.com](https://9davbjzey4.execute-api.ap-northeast-2.amazonaws.com)
+
+## gif upload
+### request
+- endpoint : /
+- Method : POST
+- Content-Type : multipart/form-data
+- Body : gif=<file>
+### response
+- 200 : { id: <id> }
+- 400 : no gif
+- 500 : server error
+
+## gif download
+### request
+- endpoint : /
+- Method : GET
+- QueryString : id=<id>
+### response
+- 200 : Content-type:image/gif
+- 400 : no id
+- 404 : not found
+- 500 : server error
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