change instructions to use Bundler for installing jekyll, not install it
globally
[Data Driven Design at Venmo] Capitalize 'Venmo' and 'Android'
Merge pull request #14 from venmo/ayanonagon/edits

[Data Driven Design at Venmo] Capitalize 'Venmo' and 'Android'
Merge pull request #11 from dcosson/no_global_jekyll

Change instructions to use Bundler for installing jekyll
Merge in master