Use different User-Agent in RSpec HTTP requests

RSpecs that send actual HTTP requests to download assets should
use a non-default User-Agent to make it clear the requests are
coming from tests.
Standardize and Clean CLI output
Show full URL if downloading file, otherwise show filename.
Merge pull request #127 from svennam92/simplify-output

Standardize and Clean CLI output
Merge branch 'master' into user-agent-fix

Conflicts:
	spec/bin/compile_spec.rb

Sync'ed my fork with the upstream repo.
Merge pull request #128 from ThomWright/user-agent-fix

User agent fix - update to RSpecs
refactor for rspec 3
Merge pull request #129 from spaungam/rspec3

Refactor for rspec 3