Fix build.
Merge pull request #666 from djanowski/fix-build

Fix build.
Remove ruby-head from Travis build matrix

ruby-head seems to be incompatible with rubyzip (via
selenium-webdriver):
http://travis-ci.org/#!/jnicklas/capybara/jobs/886729
https://github.com/aussiegeek/rubyzip/issues/38
Whitespaces fix
has_select? :options filter matches only exact options
Test has_select matches exact empty options
has_select? supports matching a partial options set
Merge pull request #675 from grzuy/has_select_options_refactor

Refactor #has_select? matcher option filters
Refactor has_select? matcher :selected filter

The previous behaviour was matching any subsets of
selected options.
Now matches only the exact set of selected options.
Merge pull request #676 from grzuy/refactor_selected_options_filter

Refactor has_select? matcher :selected filter
Remove README mention of resynchronize option removed in a1b1cc7132a2e7a
Merge pull request #678 from Empact/readme

Remove README mention of defunct resynchronize option
Loosen launchy dependency

Caught by Gemnasium.
Rack-test driver should ignore the first leading newline in textarea
Merge pull request #687 from khustochka/textarea-newline

Rack-test driver should ignore the first leading newline in textarea (fixes #677)
Fix (eval) in backtrace for node methods
Merge pull request #688 from tpope/eval-backtrace

Fix (eval) in backtrace for node methods
Add the Poltergeist driver to the README
Merge pull request #692 from jonleighton/poltergeist

Add the Poltergeist driver to the README
Do not tell people to install bundler; it's ubiquitous thanks to Rails 3