Goodbye CoffeeScript,
hello JavaScript!

# install locally            
$ npm install -g decaffeinate

# convert a single file      
$ decaffeinate index.coffee  

# convert a whole project    
$ decaffeinate src/          

# remove the .coffee files   
$ find . -name '*.coffee' \  
> -exec rm {} \;             

# commit the result           
$ git add -A                  
$ git commit                  

# See the conversion guide    
# for more information.       
Try it!