Pass moose version from command line BhallaLab/moose#200 .

CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 
 PROJECT(MOOSE)
-set(MOOSE_VERSION "3.0.2")
+set(MOOSE_VERSION "3.1.1")
 include( ExternalProject )
 
 
@@ -30,6 +30,7 @@ ExternalProject_Add(
    SOURCE_DIR  ${CMAKE_SOURCE_DIR}/moose-core
    BINARY_DIR ${MOOSE_CORE_BUILD_DIR}
    CMAKE_ARGS -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} 
+       -DVERSION=${MOOSE_VERSION}
        -DCMAKE_INSTALL_PREFIX=${MOOSE_CORE_INSTALL_DIR}
        -DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}
        -DDEBUG=${DEBUG}