update for scala-2.11.1
Merge pull request #254 from rkmathi/scala-2.11.1

update for scala-2.11.1
typo
Merge pull request #256 from renaud/patch-1

typo
tweaks to readme.
Merge remote-tracking branch 'scalanlp/master'

Conflicts:
	README.md
fixed an issue in the new semiring support.
breeze 0.8.1
0.8.2-SNAPSHOT