adding license header, style fixes
update picard dependency to htsjdk version 1.118
Merge pull request #20 from mheuer-nmdp/style-fixes

Adding license header, style fixes
change builder access methods to withStart() and withEnd()
Merge pull request #24 from ckennedy-nmdp/test-branch

change builder access methods to withStart() and withEnd()
Merge pull request #22 from mheuer-nmdp/update-htsjdk

Update picard dependency to htsjdk version 1.118