Updated build instructions for openmodelica

git-svn-id: http://svn.code.sf.net/p/adevs/code/trunk@258 153d293f-9360-418f-87de-c6d3afdd7922
Added lapack to linker for modelica models

git-svn-id: http://svn.code.sf.net/p/adevs/code/trunk@259 153d293f-9360-418f-87de-c6d3afdd7922