Added package script to create Nuget package from Release build

Udpated nuspec to use the actual version
Updated version to be 1.2.3.0

(placeholder is due to Nuget not creating folders)
Improve CrawlDecision

Makes it easier to implement methods returning CrawlDecision
Revert "Improve CrawlDecision"

This reverts commit b09193d4b012db206c5606b6e7624cc25f3e756e.
Merge pull request #5 from LordMike/1.2.3

Added package script to create Nuget package from Release build