Fixed typo in README

package name was wrong.
Changed PB client to use native 2i

Changed the PB riak client to use native protobuf 2i rather than map
reduce.
formatting

Should fix weird tab+space thing
Merge pull request #191 from basho/gh188-pb-native-2i

PB client now uses native 2i
Removes global locking on interned String

The existing locking scheme was relying on the global string pool and
really introduced far larger scope than necessary.
Merge pull request #197 from basho/gh160-avoid-string-intern

Removes global locking on interned String