Merge pull request #4 from asfadmin/seasat_devel

Seasat devel
Needed to take the -Werror option out of Makefile to get things to compile on my MacBook Pro.
Merge branch 'seasat' of https://github.com/rudigens/ASF_MapReady into seasat
Updated the manual with the latest and greatest information on Seasat HDF5 support.
Merge pull request #141 from rudigens/seasat

Manual update
Merge branch 'seasat_devel' of https://github.com/asfadmin/ASF_MapReady into devel