Improve firebase doc fixes #670
Improve firebase doc fixes #670

With the travis-ci auto deploy to firebase we put `<base href="/">`
above `<!-- Chrome for Android theme color -->` It seems to work fine.

lordoftheflies/mlm-portal,trendystore/store,gertcuykens/polymer-starter-kit,Ex-ante-Labs/pivot-ahead,Sykkro/penny-web,trendystore/store,semafloor/semafloor-test-alpha,klarkc/polymer-loopback-starter-kit,semafloor/semafloor-test-alpha,alexpaluzzi/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,gick/mobile-polymer-starter-2,klarkc/polymer-loopback-starter-kit,michaetto/f16,lordoftheflies/mlm-portal,Sykkro/penny-web,gick/mobile-polymer-starter-2,anthonybrown/polymer-starter-kit,Ex-ante-Labs/pivot-ahead,felixzapata/polymer-starter-kit,gertcuykens/polymer-starter-kit,felixzapata/polymer-starter-kit,StartPolymer/polymer-starter-kit,gick/reveries-project,FaellCarvalho/Geo-Location,michaetto/f16,Ex-ante-Labs/shopper.ninja,StartPolymer/polymer-starter-kit-plus,trendystore/store,StartPolymer/polymer-starter-kit,plusCubed/pluscubed-site,abdonrd/polymer-starter-kit,semafloor/semafloor-test-alpha,flaiker/polymer-starter-kit,gick/reveries-project,lordoftheflies/mlm-portal,Ex-ante-Labs/shopper.ninja,anthonybrown/polymer-starter-kit,FaellCarvalho/Geo-Location,Sykkro/penny-web,flaiker/polymer-starter-kit,plusCubed/pluscubed-site,mtusk/polymer-starter-kit,Serious-Rage/poligomy,FaellCarvalho/Geo-Location,gick/reveries-project,grebett/polymer-starter-kit,mtusk/polymer-starter-kit,gick/mobile-polymer-starter-2,grebett/polymer-starter-kit,michaetto/f16,abdonrd/polymer-starter-kit,grebett/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,StartPolymer/polymer-starter-kit-plus,klarkc/polymer-loopback-starter-kit,markovuksanovic/polymer-starter-kit,stefanoantonel/brainpower,felixzapata/polymer-starter-kit,stefanoantonel/brainpower,markovuksanovic/polymer-starter-kit,markovuksanovic/polymer-starter-kit,Serious-Rage/poligomy,gertcuykens/polymer-starter-kit,Serious-Rage/poligomy