bump to 4.0.0-alpha.3 - fixes #46

Author: jamesward

pom.xml

@@ -11,7 +11,7 @@
     <groupId>org.webjars</groupId>
     <artifactId>bootstrap</artifactId>
     <name>Bootstrap</name>
-    <version>3.3.8-SNAPSHOT</version>
+    <version>4.0.0-alpha.3-SNAPSHOT</version>
     <packaging>jar</packaging>
     <description>WebJar for Bootstrap</description>
     <url>http://webjars.org</url>