EXP-219.  Finalize KijiInput API for 1.0 release.

EXP-219.  Finalize KijiInput API for 1.0 release.

Remove explicit KijiInput class so that calls to KijiInput that used to
look like:

  KijiInput(tableURI)("family:column1" -> 'word)

now look like:

  KijiInput(tableURI, "family:column1" -> 'word)

Also updated Scaladoc and all unit tests.

wip

Updated comments and fixed remaining compilation bugs

EXP-219.  Updated style based on feedback from Robert.

Got rid of trailing whitespace, updated Scaladoc to match conventions,
fixed hanging indents, and renamed kijiURI to kijiUri.

EXP-219.  Reverted unnecessary changes to test files.

I had previously made a minor change to a couple of test cases that
weren't compiling.  The problem was some interaction of my IntelliJ and
Maven setups and the order in which I was running Maven commands.