Issue#369. Call sourceConfInit in HadoopTest Mode.

Fixes openForRead in HadoopTest to call sourceConfInit before
calling openForRead on the tap.
In README.md add link to FAQ sbt anchor.
In README.md add link to FAQ sbt anchor.
Merge branch 'klin_readme_sbt' of https://github.com/reconditesea/scalding into klin_readme_sbt

Conflicts:
	README.md
Merge pull request #404 from reconditesea/klin_readme_sbt

Klin readme sbt
Merge pull request #403 from renuka-apte/issue369

Issue#369. Call sourceConfInit in HadoopTest Mode.
In Tool, create a URL for GitHub wikipage's anchor when catching an throwable exception.
Provides defaults for TypedDelimited separator. Closes #193.
Create gitHub exception wiki link in RichXHandler. Use t.getClass.getName to get its class name.
Again, create gitHub exception wiki link in RichXHandler, as its method.
Bug fix: in the tests createXUrl should take a Throwable, not a classOf[Throwable]
Merge pull request #406 from sankha93/develop

Provides defaults for TypedDelimited separator. Closes #193
Move class string constants from XHandler to XHandlerTest.
Merge pull request #405 from reconditesea/klin_wiki_link

Generate wiki link in Tool.