Bump version to 0.2.2

Cargo.toml

@@ -2,7 +2,7 @@
 
 name = "rocksdb"
 description = "A Rust wrapper for Facebook's RocksDB embeddable database."
-version = "0.2.1"
+version = "0.2.2"
 authors = ["Tyler Neely <t@jujit.su>", "David Greenberg <dsg123456789@gmail.com>"]
 license = "Apache-2.0"
 keywords = ["database", "embedded", "LSM-tree", "persistence"]

README.md

@@ -3,7 +3,7 @@ rust-rocksdb
 [![Build Status](https://travis-ci.org/spacejam/rust-rocksdb.svg?branch=master)](https://travis-ci.org/spacejam/rust-rocksdb)
 [![crates.io](http://meritbadge.herokuapp.com/rocksdb)](https://crates.io/crates/rocksdb)
 
-This library has been tested against RocksDB 3.13.1 on linux and OSX.  The 0.2.1 crate should work with the Rust 1.4 stable and nightly releases as of 11/15/15.
+This library has been tested against RocksDB 3.13.1 on linux and OSX.  The 0.2.2 crate should work with the Rust 1.5 stable and nightly releases as of 12/8/15.
 
 ### status
   - [x] basic open/put/get/delete/close
@@ -36,7 +36,7 @@ sudo make install
 ###### Cargo.toml
 ```rust
 [dependencies]
-rocksdb = "0.2.1"
+rocksdb = "0.2.2"
 ```
 ###### Code
 ```rust