Report coverage (#863)

test/documentation.vim

@@ -10,6 +10,7 @@ describe 'documentation docstrings'
     end
 
     it 'simple'
+        Expect maparg('K') == ':call jedi#show_documentation()<CR>'
         put = 'ImportError'
         normal GK
         Expect bufname('%') == "__doc__"

test/vimrc

@@ -0,0 +1,8 @@
+" Minimal vimrc to use jedi-vim.
+"
+" Not used anywhere yet, but allows for easy testing.
+let script_dir = fnamemodify(expand('<sfile>'), ':h:h')
+let &runtimepath = script_dir.','.&runtimepath.','.script_dir.'/after'
+
+syntax on
+filetype plugin indent on