Update README.md

README.md

@@ -5,8 +5,9 @@ Materials used in a session for: The Social Science of Energy Storage (PSY6018)
 A lecture/practical session in the teaching part of [Sheffield/Southampton Centre for Doctoral Training in Energy Storage and its Applications](http://www.southampton.ac.uk/engineering/postgraduate/research_degrees/energy_storage_cdt.page)
 
  * Readme - this file
- * .pptx - lecture slides
+ * [Lecture slides](BA-UK-Household-Energy-Demand-DTC-2015-02-06.pptx)
  * [Activities](activities.md) - practical R examples/exercises
+ * Plus various pre-processing (STATA .do) and exercises example code (.R)
  
 Data used:
  * DECC Household Electricity Survey - https://www.gov.uk/government/collections/household-electricity-survey