Update syntax highlighting and add links

README.md

@@ -2,118 +2,109 @@
 
 Tools and utilities for GeoModel-based detector description projects. This includes the CLHEP ExpressionEvaluator 
 (which was moved here to use throughout the project without linking against CLHEP), an XML parser (GeoModelXMLParser) and
-a JSON Parser. The GeoModelTools installation requires the GeoModel suite (GeoModelCore, GeoModelIO), Eigen3, XercesC,
-nlohmann.
+a JSON Parser. The GeoModelTools installation requires the GeoModel suite ([GeoModelCore](https://gitlab.cern.ch/GeoModelDev/GeoModelCore), 
+[GeoModelIO](https://gitlab.cern.ch/GeoModelDev/GeoModelIO)), Eigen3, XercesC, and nlohmann_json.
 
 ## Installation
 
 Detailed installation procedures are available for each and every package, here is a brief and not-exhaustive list of 
 installation procedures for many of them, just bear in mind prepackaged versions are already available (e.g. 
-`brew install eigen` on Mac). Note also that the following procedures install libraries and files under /usr/local, for 
-a local installation use the CMAKE_INSTALL_PREFIX flag, e.g. `cmake -DCMAKE_INSTALL_PREFIX=../install ...`
+`brew install eigen` on Mac). 
 
-it is suggested to create a local work directory where all code will be downloaded/built. E.g.
+Note also that the following procedures install libraries and files under /usr/local, for 
+a local installation use the `CMAKE_INSTALL_PREFIX` flag, e.g. `cmake -DCMAKE_INSTALL_PREFIX=../install ...`.
+That is especially useful when working on multiple versions of the code, for each version to be self-contained in one single folder.
 
+It is suggested to create a local work directory where all code will be downloaded/built. E.g.
+
+```bash
 mkdir geomodel_work; cd geomodel_work
+```
 
 ### Eigen
 
+```bash
 git clone https://github.com/eigenteam/eigen-git-mirror.git
-
 mkdir build_eigen; cd build_eigen
-
 cmake ../eigen-git-mirror
-
 sudo make install
-
 cd ..
+```
+
 
 ### XercesC
 
-from http://xerces.apache.org/xerces-c/download.cgi download e.g. xerces-c-3.2.2.tar.gz
 
-tar zxvf xerces-c-3.2.2.tar.gz
+From http://xerces.apache.org/xerces-c/download.cgi download e.g. `xerces-c-3.2.2.tar.gz`
 
+```bash
+tar zxvf xerces-c-3.2.2.tar.gz
 mkdir build_xercesc; cd build_xercesc
-
 cmake ../xerces-c-3.2.2
-
 make -j
-
 sudo make install
-
 cd ..
+```
+
 
 ### nlohmann
 
+```bash
 git clone https://github.com/nlohmann/json.git
-
 mkdir build_json; cd build_json
-
 cmake ../json
-
 sudo make install
-
 cd ..
+```
+
 
 ### GeoModel tool suite
 
-Note: GeoModelVisualization requires Qt5 and other libraries. Please refer to the gmex documentation
+Note: GeoModelVisualization requires Qt5 and other libraries. Please refer to the `gmex` [documentation](https://gitlab.cern.ch/GeoModelDev/GeoModelVisualization/README.md)
+
 
 #### Clone and build GeoModelCore from source
 
+```bash
 git clone https://gitlab.cern.ch/GeoModelDev/GeoModelCore.git
-
 mkdir build_GeoModelCore; cd build_GeoModelCore
-
 cmake ../GeoModelCore
-
 make -j
-
 sudo make install
-
 cd ..
+```
 
 #### Clone and build GeoModelIO
 
+```bash
 git clone https://gitlab.cern.ch/GeoModelDev/GeoModelIO.git
-
 mkdir build_GeoModelIO; cd build_GeoModelIO
-
 cmake ../GeoModelIO
-
 make -j
-
 sudo make install
-
 cd ..
+```
 
 #### Clone geomodelvisualization and build gmex
 
+```bash
 git clone https://gitlab.cern.ch/GeoModelDev/geomodelvisualization.git
-
 mkdir build_geomodelvisualization; cd build_geomodelvisualization
-
 cmake ../geomodelvisualization
-
 make -j
-
 sudo make install
-
 cd ..
+```
 
 ### Clone and build GeoModelTools
 
+```bash
 git clone https://gitlab.cern.ch/GeoModelDev/GeoModelTools.git
-
 mkdir build_GeoModelTools; cd build_GeoModelTools
-
 cmake ../GeoModelTools
-
 make -j
-
 sudo make install
-
 cd ..
+```