Create pysassc man page

This patch intends to create a separate man page for the pysassc command line
utility, instead of having all the manual in the library's man page.

Gbp-Pq: Name pysassc-man.patch

docs/conf.py

@@ -227,6 +227,10 @@ latex_documents = [
 man_pages = [
     (
         'index', 'libsass', 'libsass Documentation',
+        ['Hong Minhee'], 3,
+    ),
+    (
+        'pysassc', 'pysassc', 'pysassc Documentation',
         ['Hong Minhee'], 1,
     ),
 ]