Fix: docs in ExampleResources.cpp need to say "--out-earth" for earthfile export
Removed ElevationManager as it's been replaced by ElevationQuery
Removed maxDataLevel settings as they have been replaced by maxLevel settings.
Ignore ./build files
Added getUID() method
Removed .gitignore
Fixed invalid label value if StringExpression evalutes to an empty string
Fixed invalid label value if StringExpression evalutes to an empty string
Removed commented line
Fixed merge conflict
Merge pull request #295 from flyncode/master

Added getUID() to FeatureModelGraph class
FeatureNode: add setStyle() implementation
Merge branch 'master' of github.com:gwaldron/osgearth
Fixed the --out-earth option to osgearth_viewer
From cedric_lm, making sure not to add the same tiles multiple times in ElevationLayer::assembleHeightFieldFromTileSource
Merge branch 'master' of github.com:gwaldron/osgearth
Sorting the heightfields in assembleHeightFieldFromTileSource by resolution so that the highest resolution one is always sampled first.
Docs update.
Merge branch 'master' of github.com:gwaldron/osgearth
docs: added come FAQ entries
agglite driver: added support for stroke-width units.