added mkdir step to OS X package target
testing -Weverything clean-up on wig2bed binary via clang
testing generic wig2bed Makefile with -Wextra warnings
testing clang warning fixes for sort-bed
testing -Weverything clean-up on starch/unstarch/starchcat binaries via clang
updated casts in starch API
updated version numbering on conversion scripts
adding sort-bed chromosome test script
applied bug fixes and improved error handling for conversion scripts and documentation
added GPL v2 license to project
moved LICENSE name
updated README with copyright ownership statement
updated README with copyright ownership statement
updated GPL license data in source and headers
updated README