Fix typos

README.md

@@ -9,16 +9,17 @@
 
 # Installation
 
-CADBIOM is mainly developed in Python 2.7
-
 
 ## System requirements
 
-Before running Cadbiom, the following system packages
-have to be installed from the distribution packages library :
+CADBIOM is mainly developed in Python 2.7.
+Before running Cadbiom, the build process is simplified due to **make**
+and the following system packages have to be installed from
+the distribution packages library
+(or similar, depending on your operating system):
 
 * python-gtksourceview2
-* python-dev
+* python2.7-dev
 * libxml2-dev
 * libxslt1-dev
 * libgraphviz-dev
@@ -31,7 +32,7 @@ have to be installed from the distribution packages library :
 ## Python requirements
 
 Before running Cadbiom, the following Python packages
-have to be installed from pypi repository :
+have to be installed from pypi repository:
 
 * lxml
 * networkx
@@ -53,7 +54,7 @@ or:
 ## Cadbiom package
 
 Unpack cadbiom.tar.gz;
-It contains the cadbiom folder with :
+It contains the cadbiom folder with:
 
 - antlr3 (folder)
 - bio_models (folder)
@@ -66,7 +67,7 @@ It contains the cadbiom folder with :
 
 # Utilization
 
-Run the following command in your shell :
+Run the following command in your shell:
 
     make run