Merge pull request #29 from dsyer/master

Be defensive about creating directories for files

Author: mosabua

src/main/java/org/apache/maven/wrapper/Installer.java

@@ -170,6 +170,7 @@ public void unzip(File zip, File dest) throws IOException {
         continue;
       }
 
+      new File(dest, entry.getName()).getParentFile().mkdirs();
       copyInputStream(zipFile.getInputStream(entry), new BufferedOutputStream(new FileOutputStream(new File(dest, entry.getName()))));
     }
     zipFile.close();