Allow multiple pages

Just put the pages in /public and go!
Merge branch 'master' of github.com:berkompasacademy/static_template
Update README to include minor details

Mention that you only need to run `bundle install` once and where you
should run the `rackup` command from.
Adding new feature

g branch 'upstream/master'

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.