Adding Beta 2 Mac installer issue to release notes

Referring to issue https://github.com/couchbase/sync_gateway/issues/220
CBL Android: restructured for versioning
CBL Android: update for beta 2 document
CBL Android: update for beta 2
CBL Android: update for beta 2
CBL Android: update views section
CBL Android: more updates for beta 2
CBL Android: more for beta2
CBL Android: updates
CBL Android: updates for beta2
CBL Android: updates for beta 2
CBL Android: even more beta2 updates
CBL Android: yet another update for beta2 content
Merge branch 'stage' of https://github.com/couchbaselabs/docs-ng into stage
Merge pull request #75 from gwenonacouch/stage

fixed MB-9668: renaming the title to 'Getting Warmup Info w. cbstats'
Updating to latest version of public Stage
Updating to latest Stage branch
add back index.html file
CBL iOS: fix typo
nanoc.yaml: add Android beta 2 docs