support write text[] (TEXTARRAYOID)
Merge pull request #6 from truongsinh/master

support write text[] (TEXTARRAYOID)
Error #7: Fixed compiler warning
Error #8: Using serverid and userid for connection pooling instead of hot and port.
Fixed some formating issues.
Change the Option's variable name from mongoFdwOptions to options
Merge remote-tracking branch 'upstream/master'

Conflicts:
	connection.c
	mongo_fdw.c
	mongo_fdw.h
	option.c