Build.md

+## Build instructions
+amfe is designed to be cross-platform. Build instructions for each OS is given below. Furthermore some binaries will be given as well.
+
+### Compile from source
+* [Linux](build_linux)
+* [Windows](build_win)
+
+**List of available options**  
+These options can be passed to CMake via the `-D` flag. They all default to `ON`.  
+* `USE_VTK`: enable VTK support
+* `USE_MKL`: enable Intel MKL and Pardiso support (if this is disabled, another BLAS/LAPACK library must be provided)
+* `USE_MUMPS`: enable MUMPS solver support
+
+### Install binaries
+Coming someday...
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