Splits the parser and printing into separate repos (#72)

All the JSON schema parser logic (and types) have been moved to
https://github.com/dragonwasrobot/json_schema, and is also available via hex.pm.
This repo now only includes the printer logic, cmd line wrapper and error
reporting.

This PR closes issue #71

Author: dragonwasrobot

.tool-versions

@@ -1,2 +1,2 @@
-erlang 20.1
-elixir 1.6.3
+erlang 21.0
+elixir 1.7.0

coveralls.json

@@ -1,6 +1,6 @@
 {
     "coverage_options": {
         "treat_no_relevant_lines_as_covered": true,
-        "minimum_coverage": 80
+        "minimum_coverage": 70
     }
 }

lib/js2e.ex

@@ -18,8 +18,8 @@ defmodule JS2E do
   """
 
   require Logger
-  alias JS2E.{Parser, Printer}
-  alias Parser.{ParserError, ParserWarning}
+  alias JS2E.Printer
+  alias JsonSchema.Parser.{ParserError, ParserWarning}
   alias Printer.PrinterError
 
   @output_location Application.get_env(:js2e, :output_location)
@@ -116,7 +116,7 @@ defmodule JS2E do
   @spec generate([String.t()], String.t()) :: :ok
   def generate(schema_paths, module_name) do
     Logger.info("Parsing JSON schema files!")
-    parser_result = Parser.parse_schema_files(schema_paths)
+    parser_result = JsonSchema.parse_schema_files(schema_paths)
 
     pretty_parser_warnings(parser_result.warnings)