Line numbers for `unknowns_test` of proofread.py

The output of this function will print out line numbers so it will be easier
for users to pinpoint the source data that needs to be fixed.
fixing erros on Sep 29 and Oct 8
Remove exploit code from php file
Merge pull request #58 from samccone/patch-1

Remove exploit code from php file
Merge pull request #56 from samccone/master

Congo locations
Merge pull request #55 from carlosp420/patch-1

Line numbers for `unknowns_test` of `proofread.py`
Update readme.md

improved attribution
Move raw map data into a better location.