added check for python-gobject-dev and error message

setup.py

@@ -12,6 +12,12 @@ except ImportError:
     print "We require meliae to be installed."
     exit(1)
 
+try:
+    from gi.repository import  GLib, GObject, Pango, Gtk, WebKit
+except ImportError:
+    print "We require python-gobject-dev installed.  Use: apt-get install python-gobject-dev"
+    exit(1)
+
 setup(name='pyrasite',
       version=version,
       description="Inject code into a running Python process",
@@ -23,7 +29,7 @@ setup(name='pyrasite',
       license='GPLv3',
       packages=find_packages(exclude=['ez_setup', 'examples', 'tests']),
       include_package_data=True,
-      zip_safe=True,
+      zip_safe=False,
       install_requires=[
         "Cython", # Needed for meliae
         "meliae",