Added snippets for FakeItEasy

afake => 
````csharp
var fake = A.Fake<ITypeToFake>();
````

afakestrict =>
````csharp
var fake = A.Fake<ITypeToFake>(x => x.Strict());
````

acall =>
````csharp
A.CallTo(() => fake.Method()).Returns("something");
````

acallmust =>
````csharp
A.CallTo(() => fake.Method()).MustHaveHappened();
````

acallmust1 =>
````csharp
A.CallTo(() => fake.Method()).MustHaveHappened(Repeated.Exactly.Once);  
````

acallmust2 =>
````csharp
A.CallTo(() => fake.Method()).MustHaveHappened(Repeated.Exactly.Twice);
````

acallmustx =>
````csharp
A.CallTo(() => fake.Method()).MustHaveHappened(Repeated.Exactly.Times(3));
````

acallmustnot =>
````csharp
A.CallTo(() => fake.Method()).MustNotHaveHappened();
````