added config for production/development/test and use development config by default

bin/sequelize

@@ -52,9 +52,12 @@ var createMigrationsFolder = function(force) {
 var readConfig = function() {
   try {
     var config = JSON.parse(fs.readFileSync(configFile))
-    if (config[process.env.NODE_ENV]) {
-      config = config[process.env.NODE_ENV]
+      , env    = process.env.NODE_ENV || 'development'
+
+    if (config[env]) {
+      config = config[env]
     }
+
     return config
   } catch(e) {
     throw new Error('The config.json is not available or contains invalid JSON.')
@@ -106,14 +109,22 @@ if(program.migrate) {
 } else if(program.init) {
   if(!configFileExists || !!program.force) {
     writeConfig({
-      username: "root",
-      password: null,
-      database: 'database',
-      host: '127.0.0.1',
       development: {
         username: "root",
         password: null,
-        database: 'database',
+        database: 'database_development',
+        host: '127.0.0.1'
+      },
+      test: {
+        username: "root",
+        password: null,
+        database: 'database_test',
+        host: '127.0.0.1'
+      },
+      production: {
+        username: "root",
+        password: null,
+        database: 'database_production',
         host: '127.0.0.1'
       }
     })