Logging event of devconsole request
Added keywords to readme text to answer needs of googlers
Final checks for script existence prior to switching protocols.

* moved checking URLInfo prior to constructing websocket
* changed how websocket Server is created to prepare for origin checks
Merge pull request #59 from asergeyev/pathchecks

* verification of script pathinfo before protocol upgrade happens (404 otherwise)
* minor changes (README keyword boost, logging devconsole requests)