Initial commit
Some optimizations to the line and bar graphs
Include sample
Fixes
- Fix issue with crash on line graph
- Update graph when lines added/removed
- Added Apache 2.0 Lisence
- Include LICENSE and NOTICE files
- Add Apache 2.0 License
Change to view, use interface instead of abstract class for listeners
Fixed some allocation issues
Add .gitignore and remove gitignored files
Merged in intrications/holographlibrary (pull request #1)

Add .gitignore and remove gitignored files
Ensure bars are not sharing same instance of path.
Cosmetic fixing.
Merged in yccheok/holographlibrary (pull request #2)

Selection second bar in the example will highlight 1st and 2nd bars
Updated gitignore to include out/ folder for Gradle.
Improve readability -- added comments and broke up long statement. Also, converted tabs to spaces
Merged in alexfu/holographlibrary (pull request #4)

Improve readability -- BarGraph

THANKS! :)
adding gradle support for library project