0.5.0beta3, and work around maven-release-plugin's stupidity

Namely: this idiotic plugin clones the entire repository again to perform a
release (it doesn't know about git archive, it seems) and creates nonsense
commits in the process.

I don't want either of those to happen, so .git/config edit by hand it is to use
a local bare clone instead.

Author: fge

README.markdown

@@ -3,7 +3,7 @@
 <p><b>IMPORTANT: if you report a bug, please mention what version you are
 using!</b></p>
 
-<p>The current version is <b>0.5.0beta2</b>.</p>
+<p>The current version is <b>0.5.0beta3</b>.</p>
 
 <p>The old, still maintained version is <b>0.4.1</b>. See the
 [ChangeLog](https://github.com/fge/json-schema-validator/wiki/ChangeLog) for

pom.xml

@@ -3,7 +3,7 @@
     <groupId>org.kitchen-eel</groupId>
     <artifactId>json-schema-validator</artifactId>
     <name>json-schema-validator</name>
-    <version>0.5.0beta3-SNAPSHOT</version>
+    <version>0.5.0beta4-SNAPSHOT</version>
     <packaging>jar</packaging>
     <description>A Java implementation of the JSON Schema specification</description>
     <url>https://github.com/fge/json-schema-validator</url>