Add geojson sample files
Add vector label example
Update vector-labels example

Add forms to let the user change the labels as they want.
Text 'Wrap' doesn't work properly. '\n' are supposed to allow
line to break.
Remove unused 'align' column from geojson
Update vector-labels example

Add note about the 'Text/Wrap' option currently not working.
Fix vector-labels example

Typo fixes, add 1 more font
Add ol.View2D#fitGeometry
Add ol.View2D#centerOn
Add center example
Update the pointer to the next block when reversing

Just reversing the array is not enough, the pointers to the
beginning of the next block must be changed to the reversed
array index.
Merge pull request #1824 from ahocevar/replay-hit-detection

Iterating through the hit detection replay batch fails when geometryRenderFunction returns false
Merge pull request #1746 from sbrunner/fitcoordinates

Fit coordinates on visible map, Center coodinate on positions
Merge pull request #1785 from adube/example-labels

Example labels