message: Update .travis.yml
  Fixed a variable name
diff: @@ -81,7 +81,7 @@ script:
  - if [ $MPI == "YES" ]; then export MYCXX=mpic++; else export MYCXX=$CXX; fi
  # Build the code and do a quick check (debug mode) or a full tests run (non-debug mode)
  - - if [ $DEBUG == "NO" ]; then export MFEM_TEST_TARGET="test"; else export MFEM_TARGET="check"; fi
  + - if [ $DEBUG == "NO" ]; then export MFEM_TEST_TARGET="test"; else export MFEM_TEST_TARGET="check"; fi
  # Build and check/test MFEM, its examples and miniapps
  - cd $TRAVIS_BUILD_DIR
  