Update README.md

README.md

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 [dashDB](http://dashdb.com "dashDB - DWaaS") is a Data-Warehouse-as-a-Service (DWaaS) offering by IBM, available on [IBM Bluemix](http://bluemix.net "IBM Bluemix"). It offers data storage with in-memory analytics and related tools. I am going to collect some related links here.
 
+Official
+--------
 * The official dashDB website is http://dashdb.com
 * A product page at the [IBM](http://ibm.com) website is http://www-01.ibm.com/software/data/dashdb/what-is.html
 * Documentation for dashDB on Bluemix is available at https://www.ng.bluemix.net/docs/#services/dashDB/index.html
+
+
+Blog entries:
+-------------
 * I have discussed dashDB and its predecessor, the IBM Analytics Warehouse, in my [blog](http://blog.4loeser.net "Data Henrik"). Some entries are:
 * How to use dashDB with [R](http://www.r-project.org/ "R project for statistical computing")   http://blog.4loeser.net/2014/09/what-plot-db2-r-and-bluemix-help-with.html
 * How to setup dashDB and connect local tools: http://blog.4loeser.net/2014/08/setting-up-and-using-db2-in-memory.html
 * Sam Lightstone has written a blog entry about dashDB with background information and screenshots: http://softwaretradecraft.com/ibm-dashdb-is-here-keeping-data-warehouse-infrastructure-out-of-your-way/
+
+
+Other media:
+------------
 * An introduction can also be found on Slideshare: http://de.slideshare.net/cindyrussell129357/learn-more-about-dashdb-data-warehousing-and-analytics-power-at-your-fingertips-in-the-cloud
 * There is also a dashDB video on Youtube: http://youtu.be/C9RZQzMwdOM