Updated to latest Rust: ~str -> BufStr
Merge pull request #159 from ozkriff/master

Updated to latest Rust: ~str -> BufStr
Remove workaround for rust bug mozilla/rust#11040.
Merge pull request #160 from bjz/remove-workaround

Remove workaround for rust bug mozilla/rust#11040.
StrBuf->String
Remove trailing whitespace
Merge pull request #161 from bjz/string

StrBuf->String
Fix README example
Merge pull request #162 from bjz/readme

Fix README example