Create README.md
Create LICENCE
Merge branch 'master' of https://github.com/WaterApps/water-plane-app
Field and ElevationRaster classes were removed and replaced with DemData class, some unused code removed
fixed a crash when a file exists at the location the DEM folder is expected
fixed assets so 'how to load dems' page in help displays properly
added javadoc descriptions to some classes
furthered encapculation on MainActivity, more thorough Javadoc comments on MainActivity
javadocs updated
more thorough javadoc comments in MarkerHandler
more thorough javadoc comments in ReadDemData
more thorough Javadoc comments for DemData and slight refactoring
more thorough Javadoc comments for ReadGeoTiff
more thorough Javadoc comments for ReadDemDataTask
more thorough Javadoc comments for ReadDemDataTask
more javadoc comments
updated doc contents
preliminary line drawing
line drawing works properly