Delete Doxyfile

File in the root of the repo is no longer used, so deleted it.
Merge branch 'develop' to have the lastest android jni changes
Allow specifying android ndk to use at command line

Documentation indicates that the path to the ndk to
use to build could be specified at the command line
except whenever 2 arguments were specified for 
ndk-compile the help message was displayed.
Merge pull request #13 from datalogics-bhaugen/allow-specifying-ndk-at-command-line

Allow specifying android ndk to use at command line