Updated build instructions.

Buildung packages for Python 2 and Python 3 at the same time does not
work.

BUILD.txt

@@ -1,13 +1,32 @@
 Build
 =====
 
-Building Debian Packages requires the follwoing Debian Packages to be installed:
 
-python-all
-python-stdeb
-python3-all
-python3-stdeb
+Building with Python 2
+----------------------
+
+Building Debian Packages with Python 2 requires
+the following Debian Packages to be installed:
+
+- python-all
+- python-stdeb
 
 Simply build Debian packages for Python 2 and Python 3:
 
-$ python ./setup.py --command-packages=stdeb.command sdist_dsc --with-python2=True --with-python3=True bdist_deb
+$ python ./setup.py --command-packages=stdeb.command sdist_dsc --with-python2=true --with-python3=true
+$ python ./setup.py --command-packages=stdeb.command bdist_deb
+
+
+Building with Python 3
+-------------_--------
+
+Building Debian Packages with Python 3 requires
+the following Debian Packages to be installed:
+
+- python3-all
+- python3-stdeb
+
+Simply build Debian packages for Python 2 and Python 3:
+
+$ python3 ./setup.py --command-packages=stdeb.command sdist_dsc --with-python2=true --with-python3=true
+$ python3 ./setup.py --command-packages=stdeb.command bdist_deb