Embed dylibs in .gem
Bump version to 0.10.0.pre6
ignore the calabash-cucumber/dylibs dir
make gem building depend on dylibs
tidy up the build_server task
removed legacy 'SKIP_SERVER' from Rakefile

This is from back when the task was :build and it built the server and
the gem.
Rakefile env. vars. should be doc'd
RENAME: install-static-libs => install-gem-libs
install (fake) dylibs so gem install will pass
reduce CI spam with the progress formatter
update LPSimpleExample-cal server version
pass dylib path to run-loop with :inject_dylib

The public API remains the same.  Clients will use
:inject_dylib => true to indicate that they want to inject a
dylib.
skip server/gem compat. checks when injecting dylib
script to test dylib injection locally and on ci
add dylib script to local-run-as-travis
use https in Gemfile

Safer and a _possible_ fix for bundler 1.7 issue + :github gems.

With bundler 1.7, I was having trouble with Gemfiles in other
projects that used https://
WARN update gemspec - run-loop >= 1.0.0.pre4

1.0.0.pre4 is not released yet. Clients using calabash-ios from master
will need to pull run-loop master as well.
travis CI should run against run-loop master
Merge pull request #472 from calabash/feature/calabash-as-dylib-based-off-PR463

calabash dylib support - based off PR 463