Category exclusion added.
Merging #31 and bumping version
Category exclusion feature added for page level.
Documention added for 'setCategoryExclusion' feature.
Typo fixed.
Merging #32 and bumping version
New tests and refactored some existing ones
IE7-8 trim bug fixed.
New tests and refactored some existing ones

Partial commit.

Partial commit.
Possibility added to disable custom 'renderEnded' method.
Documentation added for 'customRenderEndedEnabled' option.
IE7-IE8 and disable option for 'renderEnded' merged.