Update README.md

@@ -10,23 +10,20 @@
 
 ## Usage
 
-1. Analyze the given firmware:
-
-   ```python3 m0-angr.py --type a --name firm.bin```
-
-   It generates the followings:
+1. Analyze the given firmware. It generates the followings:
    + `api.txt`: It contains the list of restored APIs.
    + `cfg.txt`: It contains the restored Control-Flow Graph in the form of disassembly.
    + `vuln.txt`: It contains the list of found vulnerabilities.
-
-2. Generate exploitable payloads:
-
-   ```python3 m0-angr.py --type g --name firm.bin --out payload.bin --code {{vuln_offset}} --dest {{dest_offset}} --ret {{ret_offset}}  ```
-
+```
+python3 m0-angr.py --type a --name firm.bin
+```
+2. Generate exploitable payloads.
    + `{{vuln_offset}}`: The offset where vulnerable codes are located(listed in the generated `vuln.txt`).
    + `{{dest_offset}}`: The offset to jump into. It must be of the prologue in a function.
    + `{{ret_offset}}`: The offset to go back to after its first step of ROP ends.
-
+```
+python3 m0-angr.py --type g --name firm.bin --out payload.bin --code {{vuln_offset}} --dest {{dest_offset}} --ret {{ret_offset}} 
+```
 3. Enjoy~.
 
 ## Requirements