Added badMap to Or.
Added a fold method to Or.
Added a toEquality method to Uniformity, so that people have a non-Explicitly DSL
way to get a NormalizingEquality form a Uniformity.
Added a toEquivalence method to Normalization, so there will be a
non-Explicitly-DSL way to go from a Normalization to an Equivalence.
Added an example of how to explicitly specify Equality's without
using the Explicitly DSL.
Merge branch '2.1.x' of https://github.com/scalatest/scalatest
Bumped version to 2.1.0.
Fixed HTML typos in Or Scaladoc.
Merge branch '2.1.x' of https://github.com/scalatest/scalatest