Better formatting

README.md

@@ -3,6 +3,7 @@
 ## vim
 
 * Set tab to 4 spaces:
+
     ```
     set tabstop=8 softtabstop=0 expandtab shiftwidth=4 smarttab
     ```
@@ -10,11 +11,13 @@
 ## Shell
 
 * Find my public IP:
+
     ```
     dig +short myip.opendns.com @resolver1.opendns.com
     ```
 
 * Check if private and public ssh key match:
+
     ```
     diff <(cat ~/.ssh/id_rsa.pub | cut -d' ' -f 2) <(ssh-keygen -y -f ~/.ssh/id_rsa | cut -d' ' -f 2)'
     ```