Bump package version, update news

DESCRIPTION

 Package: mapMCDA
 Title: Produce an epidemiological risk map by weighting multiple risk factors
-Version: 0.2.0.9000
+Version: 0.3.0.9000
 Date: 2018-06-27
 Authors@R: c(
   person("Elena", "Arsevska", email = "elena.arsevska@cirad.fr", role = c("ctb")),

NEWS.md

-# mapMCDA 0.0.1.9000
+# mapMCDA 0.3.0.9000
+
+* Export CSV with units and risk categories (#10)
+
+* Animal mobility data as a specific input type (#9)
+
+
+# mapMCDA 0.2.0
+
+* Fully working version
+
+
+# mapMCDA 0.1.0
+
+* First working prototype
 
 * Added a `NEWS.md` file to track changes to the package.