Merge pull request #4 from daithi-coombes/fix-ci

Fix CI
Merge branch 'master' of github.com:daithi-coombes/logsearch-flowdock-bot
Create rake file
rake description
use Makefiles
install node dependencies
remove dependency async, add dependency mocha
set cwd
use environment variables
setup flowdock:config
load config for tests from environment vars
mock error; write human test descriptions
make log() test async
unit tests throw errors
debug jenkins logLineCount
don't return from backedup logfile
logLineCount throw errors if found
logLineCount() console.log errors
unit test catch callback errors to errorTest()
check jenkins logLineCount() exec cmd