fix jshint error and improve some features... #2
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reformat code and fix jshint error
replace console to $log
updateOnBlur directive only use scope.$apply method when scope.$root.$$phase is null
when destroy updateOnBlur directive, remove element event handler ( prevent memory leak )
add submit event handler to updateOnBlur directive ( check validation not only blur but also submit )
add .gitignore ( ignore web storm or intelij files )