Fix grammar on deploy error message [skip ci]
correct the cargo nightly download url

fixes travis-ci/travis-ci#2656
@roidrage likes capitals
add an echo when downloading and timing ca$her
Allow to set branch for fetching casher
echo message when downloading casher, there should be an internal api for this
Update directory cache install spec for echoing
Merge pull request #282 from Aaron1011/patch-2

Update directory cache install spec for echoing
Take pod_dir into account when caching cocoapods
Fixed git fetch
Added git reset after fetch

It fixes situation when working copy were modified and we want to do git checkout.