I followed these steps from the guide found at http://planetorion.org/news/2012/01/writing-a-content-assist-plugin-for-orion/ and modified the Ruby plugin to handle keyword assist for some PHP keywords. I copied the git repo and have an almost identic repo at https://github.com/oscaralmgrenibm/orion.php.git
Now I've also installed and uploaded my files to a placeholder app running at http://oscarorionplugin.mybluemix.net/phpEditor.html. Using that link in my DevOps Services Eclipse Orion WebIDE, I get the following error:
Plugin handshake timeout for: http://oscarorionplugin.mybluemix.net/phpEditor.html
Anyone had similar issues and figured out what needs to be done?
Current Solution
It seems to be related to HTTPS and I have no further details at this moment on how to do it in a simpler way.