Merge pull request #23 from daanvdsanden/pip-fix

fix pip -e installation flag
IOS XR: Changed prompt matching for A9K cards.
added brocade driver
added ssh prompt to brocade driver
added 2 testcases: brocade ssh and brocade telnet
Merge pull request #26 from Atrato/master

added brocade driver
Merge branch 'master' of https://github.com/knipknap/exscript
also catch some useless warnings
another fix :-)
added another variant of the brocade prompt
Merge pull request #27 from Atrato/master

Improvements and fixes for the Brocade driver
small fix
Merge pull request #28 from Atrato/master

improved prompt regex in the Brocade driver
test fix for this type of prompt:
SSH@r1.xmr(config-if-e100000-15/2)#
fix is tested and seems to work
Merge pull request #30 from Atrato/master

Fix for / char in brocade prompts in configure mode
exscript: refactoring: Simplified some code in Lexer.
exscript: protocols: Added cleaning method for removing escape characters of the protocol from input.
exscript: Fixed bug: HP Procurve driver uses list of compiled regular expressions.
exscript: HP Procurve driver: Better response cleaning and promt matching.