Merge pull request #863 from glitch/862-Makefile-versioneer

Closes #862: Explict python3 for versioneer and adding 'make version' target

Makefile

@@ -165,7 +165,7 @@ endef
 $(eval $(call create_help_target,arkouda-help,ARKOUDA_HELP_TEXT))
 
 # Set the arkouda server version from the VERSION file
-VERSION=$(shell python -c "import versioneer; print(versioneer.get_versions()[\"version\"])")
+VERSION=$(shell python3 -c "import versioneer; print(versioneer.get_versions()[\"version\"])")
 # Test for existence of VERSION file
 # ifneq ("$(wildcard $(VERSIONFILE))","")
 # VERSION=$(shell cat ${VERSIONFILE})
@@ -367,6 +367,9 @@ CLEAN_TARGETS += test-clean
 test-clean:
  $(RM) $(TEST_TARGETS) $(addsuffix _real,$(TEST_TARGETS))
 
+version:
+ @echo $(VERSION);
+
 #####################
 #### Epilogue.mk ####
 #####################