Update README to reference 1.0-rc2 as the latest release.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=67867589
Move all classes to com.google.common.jimfs.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=68905401