Switch to elzr for json syntax, and disable conceal by default

ftplugin/json.vim

@@ -0,0 +1,42 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'json') == -1
+  
+" Vim syntax file
+" Language:	JSON
+" Maintainer:	Eli Parra <eli@elzr.com> https://github.com/elzr/vim-json
+" Last Change:	2014-05-20 added warning toggle
+
+"uncomment to enable folding of `{...}` and `[...]` blocks
+"setlocal foldmethod=syntax
+
+"conceal by default
+if !exists("g:vim_json_syntax_conceal")
+	let g:vim_json_syntax_conceal = 1
+end
+
+"have warnings by default
+if !exists("g:vim_json_warnings")
+	let g:vim_json_warnings = 1
+end
+
+"set concealcursor blank by default
+"this should turn off the concealing in the current line (where the cursor is at),
+"on all modes (normal, visual, insert)
+if !exists("g:vim_json_syntax_concealcursor")
+	let g:vim_json_syntax_concealcursor = ""
+end
+
+if has('conceal')
+	if (g:vim_json_syntax_conceal == 1)
+		"level 2 means concealed text gets completely hidden unless a
+		"replacement is defined (none is defined by us)
+		setlocal conceallevel=2
+		let &l:concealcursor = g:vim_json_syntax_concealcursor
+	else
+		"level 0 means text is shown normally = no concealing
+		setlocal conceallevel=0
+	endif
+	"maybe g:vim_json_syntax_conceal could be settable to 0,1,2 to map
+	"directly to vim's conceallevels? unsure if anyone cares
+endif
+
+endif