Extract method from RSpec `after` hook, add spec.
Use reporters to improve screenshot info in RSpec output.

Breaking changes:
 * `Capybara::Screenshot.append_screenshot_path` has been renamed to `Capybara::Screenshot::RSpec.add_link_to_screenshot_for_failed_examples`

User visible changes:
 * By default, RSpec’s HTML output (when using HtmlFormatter or TextMateFormatter) for failed examples now includes links to the screenshot and saved HTML, if available.
 * The `full_description` of a failed example is no longer modified to include information about screenshots (the paths / links are printed as part of the additional failure info instead). This should avoid problems with CI relying on the exact contents of `full_description`.

`HtmlEmbedReporter` propably isn’t very useful – it’s more like a proof of concept to demonstrate how easy it is to switch reporters :-)

Tested with: Ruby 1.9 / 2.0,  RSpec 2.11 / 2.14 / 3.0
Make .append_screenshot_path available again (but deprecate it).
Update README.md to include a missing "require"
Add support for Webkit width and height.

This commit allows a user to set an optional width and height
on screenshots taken with Webkit. Webkit defaults to 1000x10.
That's not a very useful size.
Update docs to reflect new options.
Merge pull request #89 from multiplegeorges/master

Add support for Webkit width and height.
Merge pull request #88 from jessepinho/master

Update README.md to include a missing "require"
Merge pull request #78 from noniq/show-links-to-screenshots

Use reporters to improve screenshot info in RSpec output
Version bump to 0.3.20
Consistently output the screenshot path when tests are run
Display the screenshot paths in the test output for other test suites

Fixes https://github.com/mattheworiordan/capybara-screenshot/issues/85, plus enables output for all other test suites other than RSpec which uses an RSpec formatter
Remove be_true and be_false deprecations in RSpec 2.99
Version bump to 0.3.21
dump screenshots from the last session used in the dsl