Update README.md

Fix size bug on macOS (#133)

- Use enclosing scroll view size to calculate width instead of the collection view

Merge pull request #132 from zenangst/fix/exclude-empty-sections

Fix/exclude empty sections

Merge pull request #128 from zenangst/Defect/Negative-item-index-for-…

…footer-reference

Fix negative index

Merge pull request #126 from zenangst/feature/MasonryGridLogic

Feature/masonry grid logic

Refactor layoutAttributesForElements to fix rare rendering glitches (#…

…122)

* Improve layoutAttributesForElements

- Set default padding to 1 if `itemsPerRow` is not set
- Add additional padding to the visible rectangle to avoid rare rendering issues with larger collections

* Fix tests and one warning

* Bump version to 0.12.0

Update project and podspec to fix warning (#119)

Add empty layoutAttribute when there are no items in a section (#117)

This stops the index out of bounds exception

Fix header & footer x origin when reaching the end (#112)

Removes the previous fixes that was suppose to align the headers and footers
correctly when reaching the end of a collection view. It appears that the
previous fix was faulty and is now removed.

Fix sectionInset.bottom when footers are not in use (#111)

* Include sectionInset.bottom when footers are not in use.

* Update version to 0.11.2

* Formatting changes and updating the vertical layout to use the sectionsMaxY

* Set indentation for the project for consitency.