Deprecate CoffeeMake for make

CoffeeMake ended up just calling make anyway, so simplify things by removing it

autoload/coffee.vim

@@ -5,12 +5,12 @@
 
 " Set up some common global/buffer variables.
 function! coffee#CoffeeSetUpVariables()
-  " Path to coffee compiler (used by CoffeeMake and CoffeeCompile)
+  " Path to coffee executable
   if !exists('g:coffee_compiler')
     let g:coffee_compiler = 'coffee'
   endif
 
-  " Extra options passed to CoffeeMake
+  " Options passed to coffee with make
   if !exists('g:coffee_make_options')
     let g:coffee_make_options = ''
   endif
@@ -25,7 +25,7 @@ function! coffee#CoffeeSetUpVariables()
     let g:coffee_cake_options = ''
   endif
 
-  " Path to coffeelint executable (used by CoffeeLint)
+  " Path to coffeelint executable
   if !exists('g:coffee_linter')
     let g:coffee_linter = 'coffeelint'
   endif

compiler/coffee.vim

@@ -50,9 +50,16 @@ exec 'CompilerSet makeprg=' . current_compiler
 call s:SetMakePrg()
 call coffee#CoffeeSetUpErrorFormat()
 
+function! s:CoffeeMakeDeprecated(bang, args)
+  echoerr 'CoffeeMake is deprecated! Please use :make instead, its behavior ' .
+  \       'is identical.'
+  sleep 5
+  exec 'make' . a:bang a:args
+endfunction
 
 " Compile the current file.
-command! -bang -bar -nargs=* CoffeeMake make<bang> <args>
+command! -bang -bar -nargs=* CoffeeMake
+\        call s:CoffeeMakeDeprecated(<q-bang>, <q-args>)
 
 " Set `makeprg` on rename since we embed the filename in the setting.
 augroup CoffeeUpdateMakePrg