Cmd-line flags to launch individual browsers.

- Added flags for browser name, version and platform so we can launch individual browsers easily.
- Added flag for the server script so it can be specified on the command line
Merge pull request #75 from rase-/add/cmd-flags-for-individual-browsers

Flags to launch individual browsers from command line
README: change badge to svg
HISTORY: update
v1.10.2
Add sauce connect tunnel identifiers from travis ci
Add support for sauce connect

Adds support for using sauce connect when testing with sauce labs
instead of using local tunnel. Will utilize TRAVIS_JOB_NUMBER as the
tunnel identifier if running within travis-ci.

See:
http://docs.travis-ci.com/user/sauce-connect/#Setting-up-Sauce-Connect
and https://docs.saucelabs.com/reference/sauce-connect/
update history
improve handling of version ranges

* support ##..beta along with ##..latest Note that latest does not imply
  beta

closes #78
add --list-available-browsers CLI flag
examples: update testing browser range
v1.11.0
Don't depend on array ordering from sauce labs

Fixes #79
Merge pull request #81 from feross/master

Don't depend on array ordering from sauce labs
update history
v1.11.1
update bouncy to 3.2.2

Fixes #80
v1.11.2