Use old lock format to support elixir 0.12.5

ericmj · ericmj · commit 626aeb127394 · 2014-04-03T11:59:58.000+02:00
diff --git a/mix.lock b/mix.lock
@@ -1 +1 @@
-%{"ex_doc": {:git, "git://github.com/elixir-lang/ex_doc.git", "c14203bfca186f68ff178e5ada9af4f5fb37e205", []}}
+["ex_doc": {:git, "git://github.com/elixir-lang/ex_doc.git", "c14203bfca186f68ff178e5ada9af4f5fb37e205", []}]

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-%{"ex_doc": {:git, "git://github.com/elixir-lang/ex_doc.git", "c14203bfca186f68ff178e5ada9af4f5fb37e205", []}}`
	`1`	`+["ex_doc": {:git, "git://github.com/elixir-lang/ex_doc.git", "c14203bfca186f68ff178e5ada9af4f5fb37e205", []}]`