
Changes some DateRange documentation to make it more clear.

As it is right now, the term "end date" is confusing. If I create a
DateRange that starts at midnight on January 1 and ends at midnight on
January 10, the 'endDate' parameter needs to be January 9, not January
10, which is confusing. I had to read the code to figure this out.

R=nnaze
DELTA=6  (0 added, 0 deleted, 6 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=4134


git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@1541 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

rethinkdb/google-closure-library,Kuniwak/google-closure-library-jsdoc,rethinkdb/google-closure-library,jarib/google-closure-library,jarib/google-closure-library,rethinkdb/google-closure-library,Kuniwak/google-closure-library-jsdoc