Update Albedo package -> v1.0.1
Use ValueCollectingVisitor from Albedo
Reformatted white spaces of GuardClauseAssertion.
Addressed nested generic parameter-type for GuardClauseAssertion.
Updated AutoFixture.NUnit2.nuspec inlcuded nunit.core.interfaces.dll
Merge branch 'nested-generic-type-issue' of https://github.com/jwChung/AutoFixture into jwChung-nested-generic-type-issue
Merge branch 'master' of https://github.com/gertjvr/AutoFixture into gertjvr-master
Incremented patch version,

in order to indicate that this version contains various bug fixes.
- Update of the Albedo dependency to the release version of Albedo.
  Resolves #272 (https://github.com/AutoFixture/AutoFixture/issues/272).
- GuardClauseAssertion can now handle nested generic types
  (https://github.com/AutoFixture/AutoFixture/pull/283).
- Enhanced OOtB behaviour for AutoFixture.NUnit2. Resolves #275
  (https://github.com/AutoFixture/AutoFixture/issues/275).