put /usr/local/bin ahead of the path and added rvm support

.zshrc

 export ZSH=~/.zsh
 
+source ~/.rvm/scripts/'rvm'
+
 PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
+PATH=/usr/local/bin:$PATH
 
 # Load all of the config files in ~/oh-my-zsh that end in .zsh
 for config_file ($ZSH/lib/*.zsh) source $config_file
 
 # Load and run compinit
 autoload -U compinit
-compinit -i
\ No newline at end of file
+compinit -i