docs: Prepare version 0.2.0 release notes

Change-Id: Ie390e902d8389f8554b62a1dbbb8fdb73772263b
diff --git a/bin/minindn b/bin/minindn
index 324513b..5f01c2c 100755
--- a/bin/minindn
+++ b/bin/minindn
@@ -82,7 +82,7 @@
 from ndn.nlsr import Nlsr, NlsrConfigGenerator
 from ndn.nfd import Nfd
 
-VERSION_NUMBER = "0.1.1"
+VERSION_NUMBER = "0.2.0"
 
 def printExperimentNames(option, opt, value, parser):
     experimentNames = ExperimentManager.getExperimentNames()