Added identity() method which conforms to jME method naming convention.  Added consistency to some JavaDoc explanations.
Added identity() method which conforms to jME method naming convention.  Added consistency to some JavaDoc explanations.

git-svn-id: 5afc437a751a4ff2ced778146f5faadda0b504ab@4739 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

chototsu/MikuMikuStudio,chototsu/MikuMikuStudio,chototsu/MikuMikuStudio,chototsu/MikuMikuStudio