Renamed several classes in the unit class library
Revert "Renamed several classes in the unit class library"

This reverts commit 20ef9eb9737a16e40a56d00ed33df999d7e67bc7.
Fixed build error
Modified the division operator to return a double
wrote some tests, added some documentation; all in a day's work
Merge branch 'master' of https://bitbucket.org/jth41/unit-class-library
some MAGIC here
Merged in Archer_M/unit-class-library (pull request #2)

wrote some tests, added some documentation; all in a day's work
Merged in timothyah/unit-class-library (pull request #3)

Modified the division operator to return a double
Changed the default value of the Dimension class to try and fix rounding errors. I also removed the solution file with the spaces in it.