Add Blowfish and Twofish as composer keywords.
Merge pull request #188 from bantu/more-composer-keywords

Add Blowfish and Twofish as composer keywords.

* bantu/more-composer-keywords:
  Add Blowfish and Twofish as composer keywords.
Merge branch 'master' into php5

* master:
  Add Blowfish and Twofish as composer keywords.