TravisCI and C function name change

• Added TravisCI testing support (issue #49)
• Renamed sqlite_phashion_init to sqlite_extension_init to fixing failing tests (issue #49).
  See f821b5f

Added Mexican Hat Wavelet function

• Added Ruby method to call into pHash's Mexican Hat Wavelet funcition (issue #37, Terence Lee / @hone)

v1.1.0: Merge pull request #41 from westonplatter/version-bump

1.1.0

• Converted to Minitest (issue #35)
• Added Phashion.distance_from method (issue #30)
• Add Sqlite3 extension to handle distance calculations (issue #27)

Renamed pHash tar.gz file to fix installing off of Github

1.0.8

• Renamed pHashion tar.gz archive as "pHash-0.9.6.tar.gz" to solve/enable install from github

Support alpha channel PNG files

1.0.7

• Respository transferred to https://github.com/westonplatter/phashion
• Added custom pHash patch to support alpha channel PNG files (issue #20 and #23)
• Link /user/local/lib (issue #21)
• Explicitly include -pthreads flag for cpp compiler (issue #15)