Enable detecting of SCSI bus in mpt module.

Some servers does not have MPT-enabled controller attached to SCSI-0 and
calling mpt-status without any arguments fails. So we firsts recognize
the id where the controller is attached and then call status with the
right id.
updated README
split contributing part to separate file

https://github.com/blog/1184-contributing-guidelines
commit test result for current behaviour #23, #24
add note about version patching
version 3.0.2, added dmraid support
dmraid: fix syntax on perl 5.8
formatting
dmraid: fix sudo test
dmraid: make up test input from patch itself
ws cleanup
dmraid: refactor code for parser and checker logic
dmraid: update enabled test
dmraid: cleanup debug
dmraid: add fake binary for tests
add testing info
not released yet
mdstat plugin rewritten to handle external devices (#34)
mdstat: one more test input. #34
mdstat plugin rewritten to handle external devices (#34)