Added Iran/Funky's fixed/modded strings

Ideally should extend, not clobber though
Restored original title screen
TEMP: changed files from Iran's data
 - cycl.shp and truk.shp restored to main/conquer
 - sandbag2 was improperly crmble2.aud
 - credits.txt was erroneously reverted to original version
Fixed spelling error in README.md