Improved readme

README.txt

@@ -2,11 +2,11 @@ small_fem is a computationally efficient finite element kernel handling high-ord
 
 Mandatory dependencies:
  - BLAS/LAPACK
- - MUMPS       (can come from PETSc)
- - Gmsh        (options: BLAS_LAPACK, OS_SPECIFIC_INSTALL, PARSER and POST)
+ - MUMPS  (can come from PETSc)
+ - Gmsh   (options: BLAS_LAPACK, BUILD_SHARED or BUILD_LIB, PARSER and POST)
 
 Optional dependencies:
- - PETSc       (compiled with MUMPS, C++ and complex arithmetics)
+ - PETSc  (compiled with MUMPS, C++ and complex arithmetics)
  - SLEPc
 
 Install: