Fix README typo
Use Ruby standard 2 space
Update README.md

Adding known issue: no binary protocol support.
Merge pull request #13 from avleen/master

Known issue: no binary protocol support
Merge pull request #10 from tnm/master

Fix readme typo
Merge pull request #11 from tnm/ruby-style

Ruby style
Remove an errant tab. Whitespace fixes
Merge pull request #15 from tnm/tab-fix

Remove an errant tab. Whitespace fixes
merge with upstream
objectsize defaults to -1