Update of readme

Author: SAnsell

README.md

@@ -15,3 +15,32 @@ The current build has models that cover the ISIS neutron facility, the ESS, and
 Contributions, comments and bug issues welcome. Please see the documents section for an introduction to the program philosophy and useage.
 
 Some basic tutorials and a bit of a gettting started guide is available at http://plone.esss.lu.se/
+
+Requirements
+------------
+
+To compile, you will need CMake, a C++ compiler (clang/gcc for example), boost, and GSL (Gnu Scientific Library).
+
+It can be built either in the top directory or in a separate build directory.
+If built in the source directory, the command is
+
+```
+cmake ./
+make
+```
+
+or for a separate build directory
+
+```
+cmake -B/path/to/buildDirectory -S/path/to/srcDirectory
+make
+```
+
+obviously make can be decorated with normal stuff, like -j8 to speed things up, or VERBOSE=1 to see what is going on.
+
+
+After than build a model e.g.
+```
+./maxiv --defaultConfig Single COSAXS AA
+```
+will build the CoSAXS beamline model for Max IV.

src/Simulation.cxx

@@ -1818,14 +1818,9 @@ Simulation::minimizeObject(const int CN)
   MonteCarlo::Object* CPtr = findObject(CN);
   if (!CPtr)
     throw ColErr::InContainerError<int>(CN,"Cell not found");
-  if (CN==2620002)
-    ELog::EM<<"MIN OBJECT "<<*CPtr<<ELog::endDiag;
   const int flag=minimizeObject(CPtr);
   if (flag<0)
     Simulation::removeCell(CN);
-  if (CN==2620002)
-
-    ELog::EM<<"MIN OBJECT FLAG "<<flag<<ELog::endDiag;
   return flag;
 }