[Breaking] Change config.js to config.json

.gitignore

@@ -4,3 +4,4 @@ node_modules
 *.swo
 data
 *.DS_Store
+config.json

server.js

@@ -12,7 +12,7 @@ var connect_rate_limit = require('connect-ratelimit');
 var DocumentHandler = require('./lib/document_handler');
 
 // Load the configuration and set some defaults
-var config = JSON.parse(fs.readFileSync('./config.js', 'utf8'));
+var config = require('./config.json');
 config.port = process.env.PORT || config.port || 7777;
 config.host = process.env.HOST || config.host || 'localhost';