chore(package): update dependencies

Author: twada

bower.json

@@ -11,7 +11,7 @@
   "devDependencies": {
     "empower": "~0.9.1",
     "espower-source": "~0.9.1",
-    "mocha": "~1.21.5",
+    "mocha": "~2.0.1",
     "requirejs": "~2.1.15",
     "assert": "Jxck/assert"
   }

package.json

@@ -15,7 +15,7 @@
     "esprima": "~1.2.2",
     "estraverse": "~1.5.1",
     "googlediff": "~0.1.0",
-    "object-keys": "~0.5.1",
+    "object-keys": "~1.0.1",
     "stringifier": "~0.1.1",
     "type-name": "~1.0.0",
     "xtend": "~4.0.0"
@@ -26,13 +26,13 @@
     "del": "~0.1.3",
     "empower": "~0.9.1",
     "espower-source": "~0.9.1",
-    "gulp": "~3.8.8",
+    "gulp": "~3.8.9",
     "gulp-derequire": "~2.0.0",
-    "gulp-mocha": "~1.1.0",
-    "gulp-mocha-phantomjs": "~0.5.0",
+    "gulp-mocha": "~1.1.1",
+    "gulp-mocha-phantomjs": "~0.5.1",
     "gulp-util": "~3.0.1",
     "gulp-webserver": "~0.8.3",
-    "mocha": "~1.21.5",
+    "mocha": "~2.0.1",
     "mocha-lcov-reporter": "~0.0.1",
     "through2": "~1.1.1",
     "vinyl-source-stream": "~1.0.0"