feat(config): add config option parameter

cli/index.js

@@ -14,7 +14,8 @@ program
           'The default bundled template generates a list of issues in Markdown')
   .option('-g, --gist', 'Publish output to a Github gist.')
   .option('-d, --data <data>', 'Set arbitrary JSON data available in the template.')
-  .option('-j, --json', 'Get output in JSON.');
+  .option('-j, --json', 'Get output in JSON.')
+  .option('-c, --config <config>', 'Config file in JSON format.');
 
 var checkOptions = function(options) {
   _.forEach(options, function(value, key) {
@@ -37,13 +38,20 @@ var parse = function(argv) {
   });
 
   args.template = args.template || path.join(__dirname, '../changelog.ejs');
+  args.config = args.config || path.join(__dirname, '../config/config.json');
 
   if (!fs.existsSync(args.template)) {
     console.error('\n"template" options is not an existing filename');
     program.help();
     process.exit(1);
   }
 
+  if (!fs.existsSync(args.config)) {
+    console.error('\n"config" options is not an existing filename');
+    program.help();
+    process.exit(1);
+  }
+
   return args;
 };
 

index.js

@@ -2,11 +2,13 @@
 
 require('./bootstrap');
 
-var config = require('./config/config.json');
 var fs = require('fs');
+var path = require('path');
 
 var cli = require('./cli');
 var args = cli.parse(process.argv);
+
+var config = require(path.resolve(__dirname, args.config));
 var template = fs.readFileSync(args.template, 'utf8');
 
 var jira = require('./jira')(config.jira);