Fixed syntax in "Getting started" example

Now correctly demonstrates how to do error-handling on a "client.set()" command
Merge pull request #2 from jahfer/master

Fix the "Getting started" example for client.Set.
Typos.
Add NewUnixClient to connect to the unix sockets.
Remove unused variables.
Use string in append directly.
Add *Map commands where possible.
Add todo.
Add test for timeout in BLPOP.
Fix all examples in readme. Req now implements Stringer interface for debugging purposes.
readme: Fix example indentation.
readme: Simplify pipeline example.
Update doc.
Fix float64 formatting.
Add test for reading many keys.
Clean up benchmarks.
Add Lua script helper.
Add another test for getting many keys.
Fix ZRevRangeByScoreWithScores to return scores.
Add experimental V2 client.