Update SetupTestingEnvironment.rst
Update SetupTestingEnvironment.rst

Fix the broken link in the Sikuli testing explanation

Remove the references to TEST_VISTA_FRESH_M_DIR from the XINDEX testing
explanation

Introduce the MUnit testing explanation

OSEHRA-ID: http://issues.osehra.org/browse/OAT-82
Change-Id: I48f399a75508318daebf6b578db9e4be7fc41528

mdgeek/VistA-FHIR-CWF,jasonli2000/VistA,OSEHRA/VistA,OSEHRA-Sandbox/VistA,timmvt/VistA_tt,jasonli2000/VistA,OSEHRA-Sandbox/VistA,josephsnyder/VistA,josephsnyder/VistA,jasonli2000/VistA,shabiel/VistA,OSEHRA-Sandbox/VistA,josephsnyder/VistA,apexdatasolutions/VistA,OSEHRA/VistA,josephsnyder/VistA,apexdatasolutions/VistA,shabiel/VistA,OSEHRA-Sandbox/VistA,josephsnyder/VistA,timmvt/VistA_tt,jasonli2000/VistA,shabiel/VistA,mdgeek/VistA-FHIR-CWF,OSEHRA/VistA,OSEHRA-Sandbox/VistA,mdgeek/VistA-FHIR-CWF,OSEHRA/VistA,apexdatasolutions/VistA,shabiel/VistA,apexdatasolutions/VistA,josephsnyder/VistA,OSEHRA/VistA,mdgeek/VistA-FHIR-CWF,timmvt/VistA_tt,mdgeek/VistA-FHIR-CWF,shabiel/VistA,apexdatasolutions/VistA,OSEHRA/VistA,timmvt/VistA_tt,shabiel/VistA,mdgeek/VistA-FHIR-CWF,OSEHRA-Sandbox/VistA,timmvt/VistA_tt