Have travis generate test coverage using istanbul.
Report coverage to build log and coveralls.
Merge pull request #260 from hindessm/test-coverage

Test coverage on coveralls.io
Change template node to allow templating of any property of msg
Add more Node tests.
Refactor common log code.
Add test for the null message case.
Short circuit the null message case.
minor spelling correction
Merge pull request #262 from hindessm/improve-node-coverage

Improve red/nodes/Node.js coverage and minor refactoring
Update icon to fa icons for parser nodes and sentiment
and add fa icons to websocket
tray/catch error in Websocket node to close #264
Spelling correctin http node info, close #266
Add node flows tests.
Remove unused code.
Fix jshint complaints.
Add setFlows test.
Removing orphaned function.
Merge pull request #269 from zobalogh/master

Removing orphaned function: localfilesystem.writeFile(root,path,meta,body,res)