message: Fix instruction for running example solver
diff: @@ -55,7 +55,7 @@ c++ -std=c++11 -o simple_solver simple_solver.cpp -I../.. \
  Now you should be able to run the program using:
  -env LD_LIBRARY_PATH=. ./simple_solver
  +env LD_LIBRARY_PATH=.:${LD_LIBRARY_PATH} ./simple_solver
  ALTERNATIVELY: use the build.sh script located in this directory
  *****************************<COMPILATION>**********************************/
  