Add comments about release to constraints

constraints.txt

@@ -5,10 +5,10 @@
 # packaging script. This allows us to maintain dependencies across
 # repositories.
 #
-# For example, during development the we use the development version
+# For example, during development we use the development version
 # of the schemas with the line:
 #
-# git+git://github.com/ga4gh/ga4gh-schemas.git@master#egg=ga4gh_schemas
+# git+git://github.com/ga4gh/schemas.git@master#egg=ga4gh_schemas
 #
 # When one has proposed a schema modification, they can change this
 # constraint to point at the branch of their proposed change:
@@ -17,5 +17,12 @@
 #
 # Then, when the change has been accepted at the schemas repository
 # you can change this to point back at the master branch!
+#
+# When making a release, these constraints are changed to point at
+# the released dependency.
+#
+# ga4gh-client==0.1.0
+# ga4gh-schemas==0.1.0
+#
 git+git://github.com/david4096/ga4gh-client.git@protobuf31#egg=ga4gh_client
 git+git://github.com/david4096/schemas.git@pipfixes#egg=ga4gh_schemas