(PDB-454) Added support for querying/returning environments for resources and facts

All v4 responses for resources and facts should now return environments. Also supported
is querying for environments using equals and regexes.
Updated install from source commands
Fixed typo.
Changed v2/v3 resource/fact API calls to remove environment from the response
Merge pull request #913 from Ginja/update_install_from_source_doc

Updated install from source commands
Merge pull request #912 from senior/ticket/master/pdb-454-resource-facts-environments

(PDB-454) Support for querying/returning environments for resources and facts
PDB-455 Add environment constraint

Signed-off-by: Ken Barber <ken@bob.sh>
PDB-455 Switch over to v4 api throughout in prep

Signed-off-by: Ken Barber <ken@bob.sh>