Add vim-json

.gitmodules

@@ -121,3 +121,6 @@
 [submodule "vim/bundle/gotests-vim"]
 	path = vim/bundle/gotests-vim
 	url = https://github.com/buoto/gotests-vim
+[submodule "vim/bundle/vim-json"]
+	path = vim/bundle/vim-json
+	url = https://github.com/elzr/vim-json

vim/bundle/vim-json

@@ -0,0 +1 @@
+Subproject commit f5e3181d0b33a9c51377bb7ea8492feddca8b503

vimrc

@@ -383,3 +383,5 @@ let g:go_highlight_generate_tags = 1
 let g:syntastic_go_checkers = ['golint', 'govet', 'errcheck']
 let g:syntastic_mode_map = { 'mode': 'active', 'passive_filetypes': ['go'] }
 set rtp+=$GOPATH/src/github.com/golang/lint/misc/vim
+
+let g:vim_json_syntax_conceal = 1