Added use of double colon to style guide.
Updated user's guide tallies.xml specification.
Fixed two errors in documentation.
Moved cross_sections.xml to data directory and added a readme file.
Added readme to tests directory.
Moved read/write_source_binary to state_point module.
Merge branch 'master' into tallyserver

Conflicts:
	src/source.F90
	src/state_point.F90