Merge pull request #4 from biojava/master

update to latest master branch
Merge pull request #26 from aalhossary/master

update to latest master branch
Accept lower-case amino acid single-letter codes.
Accept lower-case amino acid single-letter codes.
less verbose
making inpustream access method public
Merge branch 'master' of github.com:andreasprlic/biojava
Merge branch 'master' of github.com:biojava/biojava