Merge pull request #11 from cs3600/bobby_is_confused

Checking header of response works
Basic checking of RCODE in response, added some tests back
Shell of get_answer(), added correct Timeout meesage
Started on answer parsing
Fixed bug in is_pointer, cleaned up code
Fixed some pointer stuff
Fixed type mismatch bugs
Merge branch 'master' of https://github.com/cs3600/project3 into bobby_is_confused

Conflicts:
	3600dns.c
Merge branch 'master' of https://github.com/cs3600/project3 into bobby_is_confused
Fixed errors with signatures; Removed extra else