1.0.8

updated to latest version of istwitterscreenshot 0.0.7

1.0.7

this release fixes issue 1, in which not all images were being evaluated in firefox.

1.0.6

evaluates images 4x faster than previous version

1.0.5

got it working in firefox

1.0.3

removed footer white space thumbnail test (too many false positives) might reevaluate in a future version

removed firefox XPI, wasn't working from my testing (will add back in next version)

1.0.2

added support for cancelling requests after a tab is closed to save bandwidth

1.0.1

removed console.error message, removed excluding thumbnails that are too large (will scan the thumbnail but not the fullsize image)

1.0.0

Update README.md