Removing invalid 'set' option in 'Collection#fetch' docs
lowercase instance var in example code
Merge pull request #2411 from philfreo/another-typo

lowercase instance var in example code
Merge pull request #2410 from philfreo/master

Removing invalid 'set' option in 'Collection#fetch' docs
more lowercasing of instance vars
more lowercasing of instance vars
fixing minor typos
Merge pull request #2412 from philfreo/another-typo

Minor typo fixes to docs.
Merge branch 'master' into gh-pages