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
Merge pull request #1785 from adube/example-labels

Example labels