minor improvements

fixed a few things in rss module, minor improvements to other modules.
Added test file for use without installing

dev_tests.py

@@ -0,0 +1,26 @@
+from inkycal.modules.inkycal_rss import rss
+from inkycal.modules.inkycal_calendar import calendar
+from inkycal.modules.inkycal_agenda import agenda
+
+# Test rss module:
+rss_size = (384, 160)
+rss_config = {'rss_urls': ['http://feeds.bbci.co.uk/news/world/rss.xml#']}
+rss = rss(rss_size, rss_config)
+rss.generate_image()
+
+
+
+# Test calendar module:
+
+calendar_size = (400, 520)
+calendar_config = {'week_starts_on': 'Monday', 'ical_urls': ['https://calendar.google.com/calendar/ical/en.usa%23holiday%40group.v.calendar.google.com/public/basic.ics']}
+calendar = calendar(calendar_size, calendar_config)
+calendar.generate_image()
+
+
+# Test agenda module:
+
+agenda_size = (400, 520)
+agenda_config = {'week_starts_on': 'Monday', 'ical_urls': ['https://calendar.google.com/calendar/ical/en.usa%23holiday%40group.v.calendar.google.com/public/basic.ics']}
+agenda = agenda(agenda_size, agenda_config)
+agenda.generate_image()