Update tasklist with more arguments

Added skipNode & skipPhantomjs arguments to tasklist.setup() function.
Updated server setup action

Read skipNodeSetup and skipPhantomjsSetup arguments from config file.
Updated README with new setup options

skipNodeSetup and skipPhantomjsSetup options added
Updated README
Update README.md
Update taskLists.js
Update actions.js
Updated config with setupNode & setupPhantom check

Initializes setupNode & setupPhantom configs
Updated README with renamed config variables
Merge pull request #23 from mugli/master

Made nodejs and phantomjs installation optional