Automatically update version number in README.md

As I often forget.

Author: oschwald

README.md

@@ -16,7 +16,7 @@ To do this, add the dependency to your pom.xml:
     <dependency>
         <groupId>com.maxmind.minfraud</groupId>
         <artifactId>minfraud</artifactId>
-        <version>0.0.1</version>
+        <version>0.0.2</version>
     </dependency>
 ```
 

dev-bin/release.sh

@@ -44,6 +44,8 @@ if [ "$SHOULD_CONTINUE" != "y" ]; then
     exit 1
 fi
 
+perl -pi -e "s{(?<=<version>).+?(?=</version>)}{$VERSION}g" README.md
+
 PAGE=.gh-pages/index.md
 cat <<EOF > $PAGE
 ---