add global gulp for test; bump to v0.3.0-rc3

Author: dilin-MS2

.travis.yml

@@ -47,7 +47,9 @@ before_install:
     /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)";
     brew cask install arduino;
   fi
+- npm install -g node-gyp
 - npm install -g vsce
+- npm install -g gulp
 - npm install -g typescript
 
 install:

package-lock.json

@@ -2,7 +2,7 @@
   "name": "vscode-arduino",
   "displayName": "Arduino",
   "description": "Arduino for Visual Studio Code",
-  "version": "0.3.0-rc2",
+  "version": "0.3.0-rc3",
   "publisher": "vsciot-vscode",
   "aiKey": "83dd2c27-6594-41d3-85a9-bdb22070eb42",
   "preview": true,