get_free_memory
little tweak
get_free_memory for windows
Resolved merge conflicts
replace os.name with sys.platform
Merge remote-tracking branch 'origin/free_memory' into free_memory
Calculate free memory on osx too.
Removed mask array to see if it saves memory
Further implementation for reporting possibly memory usage issues proactively
Merge branch 'free_memory' of github.com:AIFDR/inasafe into free_memory
Merge branch 'master' into free_memory
Work out simple metric for if there is possibly not enough ram for the analysis (based on 10%)
convert to int get_free_memory_win
Merge remote-tracking branch 'origin/free_memory' into free_memory
Nicer error messaging for memory usage requirements
Merge branch 'free_memory' of github.com:AIFDR/inasafe into free_memory
Fixed test for check memory usage
Also added note about adding more ram to computer