Lint whole package for gosimple and gotype

Fixes #936

ale_linters/go/gosimple.vim

@@ -1,10 +1,14 @@
 " Author: Ben Reedy <https://github.com/breed808>
 " Description: gosimple for Go files
 
+function! ale_linters#go#gosimple#GetCommand(buffer) abort
+    return ale#path#BufferCdString(a:buffer) . ' gosimple .'
+endfunction
+
 call ale#linter#Define('go', {
 \   'name': 'gosimple',
 \   'executable': 'gosimple',
-\   'command': 'gosimple %s',
+\   'command_callback': 'ale_linters#go#gosimple#GetCommand',
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \   'output_stream': 'both',
 \   'lint_file': 1,

ale_linters/go/gotype.vim

@@ -6,7 +6,8 @@ function! ale_linters#go#gotype#GetCommand(buffer) abort
         return
     endif
 
-    return 'gotype %s'
+
+    return ale#path#BufferCdString(a:buffer) . ' gotype .'
 endfunction
 
 call ale#linter#Define('go', {