Updating first chapter

doc/src/How2ReadData/How2ReadData.do.txt

@@ -73,7 +73,7 @@ we recommend that you install the following Python packages via _pip_ as
 o pip install numpy scipy matplotlib ipython scikit-learn mglearn sympy pandas pillow
 For Python3, replace _pip_ with _pip3_.
 
-For OSX user we recommend also, after having installed Xcode, to install _brew_. Brew allows 
+For OSX users we recommend also, after having installed Xcode, to install _brew_. Brew allows 
 for a seamless installation of additional software via for example
 o brew install python3
 
@@ -91,7 +91,7 @@ o Enthought canopy
 
 
 !split
-===== Installing R and C++ =====
+===== Installing R, C++, cython or Julia =====
 
 You will also find it convenient to utilize R. Say more about R. 
 Jupyter/Ipython notebook allows you run _R_ code interactively in your browser. The software library _R_ is 
@@ -106,10 +106,17 @@ setup allows you to integrate widely popular softwares and tools for scientific
 including symbolic operations, Python offers a unique computational environment. Your Jupyter/IPython notebook 
 can easily be converted into a nicely rendered _PDF_ file or a Latex file for further processing.
 
+This never ends, 
+
+If you se the light mark-up language _doconce_ you can convert a standard ascii text file into various HTML 
+formats, ipython notebooks, latex files, pdf files etc. 
 
 !split
 ===== Introduction to Jupyter notebook and available tools =====
 
+!split
+===== Doing it in R  =====
+Use the Hudson bay model to load data and make plot in R and with python
 
 
 !split