add support for attribute type to generated tld and docs
added test for attribute type
use wrapper for primitives in generated tlds and docs
Merge branch 'attributetype' of github.com:nathancomstock/tldgen into nathancomstock-attributetype

Conflicts:
	src/main/java/org/tldgen/writers/TldLibraryWriter.java
Release 1.4.4
Starting 1.5