added Constants for DS
added similarity
added constants for DS
Merge branch 'master' of https://github.com/ankurgandhe/hw5-team06

Conflicts:
	qa4mre-alzheimer-task/results/12-test-alzheimer/QA4MRE-2012_BIOMEDICAL_GS.xml_3.xmi
	qa4mre-alzheimer-task/results/12-test-alzheimer/QA4MRE-2012_BIOMEDICAL_GS.xml_4.xmi
	qa4mre-alzheimer-task/src/main/resources/SimpleQuestionRunCPE.xml