Merge pull request #34 from ekopylova/master

updated README file and removed old user manual
Merge pull request #35 from ekopylova/master

tests + ChangeLog
Merge pull request #36 from ekopylova/kmer-counting

untrack tests, large
Merge pull request #37 from ekopylova/master

untrack tests, large
edit NULL SAM string
add read sequence to NULL SAM string
add read sequence to NULL SAM string
sequence & quality consistent
Merge pull request #39 from ekopylova/sam-print-all-reads

SAM format print all reads
issue 40 resolved (main biocore site)
added test for searching multiple databases
Merge pull request #41 from ekopylova/issue_40

resolves issue https://github.com/biocore/sortmerna/issues/40
resolved conflict merge