code formatting
minor update to project tree
create group in project structure
add key for Location usage Description

see http://stackoverflow.com/questions/12562152/replacement-for-purpose-property-of-cllocationmanager
rename properties of Augment, implement NSCoding in Augment
chnage type of url to NSURL
add UnitTests
replace NSLog with NBLog
this avoids unwanted log output in deployment code and makes debugging more convenient due to use of __PRETTY_FUNCTION__
rename singleton constructor to comply with standard Obj-C convention.
implement more conservative singleton constructor pattern
load ViewController stuff from xib
fill table with real augments