Release v0.2.7.

Fix postinstall

updated post install

node v6 compatiable and version lock

Merge branch 'dev'

jshint fix

updated example, html2canvas plugin, wrap all code into a function

retry on connection failure

[fix #35] add status bar class to existing class

Merge pull request #34 from nkashyap/dev

urgent bug fix

fix path issue

Merge pull request #33 from nkashyap/dev

version updated

[Fixed #29] Path problem (code refactoring)