Merge pull request #88 from NickStefan/master

updated handsontable commit pointer
update filepath in current workbook service when clicking open button
Merge pull request #90 from johnheroy/angular-refactor

update filepath in current workbook service when clicking open button
Merge pull request #89 from NickStefan/master

the great master merge angular-refactor of 2014
Merge branch 'angular-refactor'
Merge pull request #92 from johnheroy/master

One last merge from angular-refactor...
Import git commit histories from .grid files
Merge pull request #93 from johnheroy/master

Import git commit histories from .grid files
Generalize path of unzipped grid file
Merge pull request #94 from johnheroy/master

Generalize path of unzipped grid file in shell.js
Unzip .grid file to hidden folder
Merge pull request #96 from johnheroy/master

Unzip .grid file to hidden folder
Refactor open gridfile logic into service
Merge pull request #97 from johnheroy/master

Refactor open gridfile logic into service
Revise README so .grid file structure consistent with Workbook class
Merge pull request #98 from johnheroy/master

Revise README so .grid file structure consistent with Workbook class
Snapshots Directive
Merge pull request #99 from fsbatista/angular

Snapshots Directive (Styles to be defined..Nevermind the inline Style tags)
RuleJS formulas mixed in with our cellRenderer
formula renderer refactor