Changes To Publishing Script

Publishing script needs to push the symbols package too
Publishing script needs to wrap string concats in quotes for write-error

Extension Methods and New MemberInfo features

Added GetValue() / SetValue() methods for MemberInfos
new tests fro GetValue() / SetValue()
Added new ExpressiveReflection.Extensions which exposes most of the same
functionality as extension methods on their corresponding reflection
types
updated version
added new text document describing steps needed to be followed to update
version because it may be difficult to remember