First working DeltaR matcher & quick test.
Make files follow CMS standards (not 100% there yet).

Includes _ AFTER private member names, updating include guards,
default documentation for classes.
Add basic CppUnitTest example.

Update basic test so now does basic Suite, with TestRunner - essentially all you need for simple tests.

Update basicTest with setUp and tearDown methods.
move unit test example to /test and how to run with scram
Implement jet sorting by descending pT
Fix DeltaR Matcher failing to return refJet. Also add in refJet checker to make sure no duplicates returned
add in debug function to print out matches
Add in example of CppUnit for testing, and very simple unit test for DeltaR_Matcher. To be expanded.
add test for minJetPt and maxJetEta
add cleanup methods for matcher tests. should probably do better in future.
Add test on maximum deltaR
Make printMatches more informative
add test to check pT ordering
Rename from MatcherUnitTest to DeltaR_Matcher_UnitTest, do setUp and tearDown better, make print statements optional.