Support to use package.json description (#133)

Author: ulion

bin/node-lambda

@@ -4,8 +4,9 @@ var dotenv = require('dotenv');
 var lambda = require('../lib/main.js');
 var program = require('commander');
 var fs = require('fs');
-var packageJsonName = fs.existsSync(process.cwd() + '/package.json')
-    ? require(process.cwd() + '/package.json').name : 'UnnamedFunction';
+var packageJson = fs.existsSync(process.cwd() + '/package.json')
+    ? require(process.cwd() + '/package.json') : {};
+var packageJsonName = packageJson.name || 'UnnamedFunction';
 
 dotenv.load();
 
@@ -21,7 +22,7 @@ var AWS_HANDLER = process.env.AWS_HANDLER || 'index.handler';
 var AWS_ROLE = process.env.AWS_ROLE_ARN || process.env.AWS_ROLE || 'missing';
 var AWS_MEMORY_SIZE = process.env.AWS_MEMORY_SIZE || 128;
 var AWS_TIMEOUT = process.env.AWS_TIMEOUT || 60;
-var AWS_DESCRIPTION = process.env.AWS_DESCRIPTION || '';
+var AWS_DESCRIPTION = process.env.AWS_DESCRIPTION || packageJson.description || '';
 var AWS_RUNTIME = process.env.AWS_RUNTIME || 'nodejs4.3';
 var AWS_PUBLISH = process.env.AWS_PUBLISH || false;
 var AWS_FUNCTION_VERSION = process.env.AWS_FUNCTION_VERSION || '';