Add exports for interactions.
remove export for conditionType as it breaks the build to have it in there.
Label the link to ol.interaction as ol.interaction.Interaction
The documentation is really talking about instance of Interaction, not the namespace.  This is more clear for users.
fix lint issue
Add a help-target to build.py.
Fix spelling on API-doc index page.
Merge pull request #1035 from marcjansen/jsdoc

Fix spelling on API-doc index page.
Add ol.TileLoadFunctionType
Allow tile load function to be overridden
Add tileLoadFunction option to ol.source.XYZ
Export ol.Tile#getTileCoord
Add ol.TileCoord#getZXY
Export ol.TileCoord#getZXY
Export ol.ImageTile#getImage
Merge pull request #1024 from pagameba/doc-interactions

Documentation for Interactions
Assign function instead of calling it
Concatenate keys instead of joining it

For performances reasons, see http://jsperf.com/array-join-string-concat
Examples: Add switch compilation level tool.
Examples: Remove social links.
Mention default target 'build' in the help output.