sqlfindindex updates db itself, no need to pipe, minor documentation fixes

README

@@ -98,7 +98,7 @@ Important: "use_your_own" is a password and you have to use the same value here
     cd /srv/pandora/pandora
     ./manage.py syncdb --noinput
     ./manage.py migrate
-    ./manage.py sqlfindindex | ./manage.py dbshell
+    ./manage.py sqlfindindex
     ./manage.py sync_itemsort
     ./manage.py collectstatic -l --noinput
     ./manage.py update_static

pandora/archive/views.py

@@ -514,8 +514,10 @@ def findMedia(request):
             'range': array
         }
 
-            query: query object, more on query syntax at
+            query: item query object, more on query syntax at
                    https://wiki.0x2620.org/wiki/pandora/QuerySyntax
+                   get media for all items matching the given query
+
             sort: array of key, operator dics
                 [
                     {