Updating to EF 6.0.1

Updating the StackExchange.Profiling.EntityFramework6 project to the
latest version of Entity Framework 6.
Merge pull request #9 from stebet/master

Updating to EF 6.0.1
Making it easy to initialize the EF6 MiniProfiler

The EF6 Miniprofiler can now be easily registered with the following
code:

// Add the using
using StackExchange.Profiling.EntityFramework6;

// Initialize EF6 MiniProfiler
MiniProfilerEF6.Initialize();
Merge pull request #12 from stebet/master

Making it easy to initialize the EF6 MiniProfiler with `MiniProfilerEF6.Initialize();`
Optimizing EF6 Provider wrapping

Making sure cache is always checked first to save ourselves reflection
calls in the future.
Merge pull request #13 from stebet/master

Optimizing EF6 Provider wrapping
Merge branch 'master' of https://github.com/MiniProfiler/dotnet