Version config to support breaking changes currently in the `develop` branch

Fixes #2

config-sample.json

@@ -23,5 +23,6 @@
         "entity_action": ""
       }
     }
-  }
+  },
+  "config_version": 2
 }

index.js

@@ -11,7 +11,13 @@ var request               = require( 'request' );
 /**
  * CONFIGURATION & SETUP
  */
-var config               = require( './config.json' );
+var config = require( './config.json' );
+
+if ( 'undefined' === typeof config.config_version || config.config_version < 2 ) {
+    console.error( 'Configuration is for v0.1.0 and must be updated to work with this release. Exiting!' );
+    process.exit();
+}
+
 var homeAssistantApiBase = config.home_assistant_proto + '://' + config.home_assistant_host + ':' + config.home_assistant_port + '/api/';
 var client               = new FlicClient( config.flicd_ip, config.flicd_port );
 

package.json

 {
   "name": "flic-button-home-assistant-controller",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Control Home Assistant entities with Flic buttons",
   "author": "Erick Hitter <contact@ethitter.com>",
   "license": "GPL-2.0+",