Merge pull request #65 from felixonmars/patch-1

Fix a typo: Fisrt -> First

README.md

@@ -52,7 +52,7 @@ PreSyncing           Syncing                               Success
 
 ## Generate Self-Signed Certificate
 
-Fisrt, create root CA
+First, create root CA
 
 ```
 openssl genrsa -out rootCA.key 2048