Differentiate full install from simple install

Makefile

@@ -46,9 +46,11 @@ update:
 dependencies:
 	@pip install --upgrade ./singledispatch ./enum34 ./speedometer ./properties ./dmt ./pymsc ./asn1-value-editor ./antlr3-python ./pygraphviz
 
-install: update dependencies
+install:
 	@pip install --upgrade .
 
+full-install: update dependencies install
+
 publish: 
 	@python setup.py sdist upload
 

setup.py

@@ -19,9 +19,7 @@ setup(
     author_email='maxime.perrotin@esa.int',
     description='A tiny, free SDL editor for TASTE',
     long_description=open('README.md').read(),
-    install_requires=[
-        'pygraphviz'
-    ],
+    install_requires=[],
     tests_require=['tabulate'],
     include_package_data=True,
     url='http://opengeode.net',