Add manual installation instructions

Bower support is on its way, but first I want to help people who don't
have or want to use Bower. curl and wget examples should help people
install this quickly and easily.

Change-Id: Id2738799d0bfe64298d0e49998bb6265b71be311
Reviewed-on: https://gerrit.causes.com/31480
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>
Tested-by: Joe Lencioni <joe.lencioni@causes.com>