Custom pretty indentation + docs
Custom indent in more places
replace div.sr-only with img alt attribute
correct nav menu side
Merge pull request #1708 from TimothyGu/master

Fix link to Travis CI and GitHub repo
Merge pull request #1663 from bfred-it/master

Add option to change indentation used by `pretty` option.
Merge pull request #1703 from chharvey/master

replace .sr-only with img alt attribute
correct nav menu right/left
Document `globals` option

See #1222, #1223, #1689, & #1715.

Signed-off-by: TimothyGu <timothygu99@gmail.com>