write a bit README

README

@@ -0,0 +1,13 @@
+to develop just import project to eclipse with default settings
+
+to build the jar type
+    ant
+
+to use copy JSR305Checkstyle-x.x.x.jar into your eclipse plugins directory or add it as compile lib to the classpath of the checkstyle task.
+
+add this to your checkstyle.xml
+    <module name="Jsr305Annotations">
+        <property name="packages" value="your.package.path.to.check,another.package.path.to.check"/>
+    </module>
+
+and enjoy