behat: fix import by making the export message match the expected format again
behat: Tests to demonstraten the plugin/theme install bug in #581

* Install plugins from WordPress.org repository, a local zip file, and remote zip files.
* Install themes from WordPress.org repository, a local zip file, and remote zip files.
Bug Fix for #581: allow plugins/themes to be installed from complex zip file URLs

This should be more reliable than the attempted fix in a12965c.
behat: replace 'a large image file' step with a more generic and explicit 'download' step
behat: convert install_dir private property to RUN_DIR variable
behat: remove get_path() helper method
behat: rename some helper methods
behat: remove var_dump()
If a plugin or theme is already installed and the `--version` parameter is used, prompt the user to confirm they'd like it installed.

See https://github.com/wp-cli/wp-cli/pull/476#issuecomment-20354895
Update stories to support b07154e. Behat isn't working properly on my local machine bcause of my shoddy connection, so let's see if this passes in Travis
Merge remote-tracking branch 'upstream/master' into zipfiles

Changes: https://github.com/wp-cli/wp-cli/compare/fbaab715...498fb6

behat: replace 'a large image file' step with a more generic and explicit 'download' step
behat: Convert duplicate plugin/theme tests to scenario outlines

Converts the plugin/theme tests added in e749f71 to Behat's scenario outlines (http://docs.behat.org/guides/1.gherkin.html#scenario-outlines), which removes test duplication.

vendor/bin/behat features/upgradables.feature --expand
Merge branch 'master' into zipfiles

Conflicts:
	features/steps/basic_steps.php
behat: upgradables comment updates
man-src updates for #581
Merge pull request #581 from om4james/zipfiles

Bug fix: allow plugins and themes to be installed from zip file URLs that contain GET parameters
add comments to examples for plugin/theme install

see #581
ternary -> if else
remove :
Force install Akismet, as it comes with a default WordPress install.