fix(build): switch to installing angular-material from github
fix(build): switch to installing angular-material from github

when using `npm` or `bower` for angular-material
they download the raw pre compiled files which use
`goog.require` for closure compiler. This will break everything

angular-class/angular-class-site,angular-class/angular-class-site,AngularClass/angular-class-site,janusnic/angular-class-site,AngularClass/angular-class-site,janusnic/angular-class-site