Removed XML output from version module.

Instead of directly supporting the version module, XML and HTML output will
instead always output a version string somewhere to indicate with what
version of gitinspector the output was generated.

gitinspector.py

@@ -104,9 +104,7 @@ if __name__ == "__main__":
 			elif o in("-r", "--responsibilities"):
 				__run__.responsibilities = True
 			elif o in("--version"):
-				format.output_header()
-				format.call_output_function(version.output_html, version.output_text, version.output_xml)
-				format.output_footer()
+				version.output()
 				sys.exit(0)
 			elif o in("--grading"):
 				__run__.include_metrics = True

version.py

@@ -28,13 +28,5 @@ from __future__ import print_function
 
 __version__ = "0.1.0"
 
-def output_html(string, _):
-	print("HTML output not yet supported.")
-
-def output_text():
+def output():
 	print("gitinspector {0}\n".format(__version__) + __doc__)
-
-def output_xml():
-	license_text = "\t\t" + __doc__.replace("\n", "\n\t\t")
-	print("\t<version>" + __version__ + "</version>\n" +
-	      "\t<license-text>\n" + license_text + "\n\t</license-text>")