[REQS-298] credit examples
Merge branch 'develop' into topic/REQS-298
[REQS-298] Added single name examples

Added a constructor to hedge ration calculator
[PLAT-6824] Added IR01 and JTD calculation

Also includes [REQS-298] Corrected single name examples
[PLAT-6824] Recovery01 added
[REQS-298] CDS index examples
Merge branch 'develop' into topic/REQS-298
[REQS-298] Modified array assert
[REQS-298] Removed unused code
[REQS-298] Corrected JTD formula
[REQS-298] Changed CDS pricer
[REQS-298] Improved javadoc
Merge pull request #244 from OpenGamma/topic/REQS-298

Topic/reqs 298