Remove dali.core

When i attempt to use `(require '[dali.syntax :as s])` as per the Readme i get the following error
`CompilerException java.io.FileNotFoundException: Could not locate dali/core__init.class or dali/core.clj on classpath: , compiling:(dali/syntax.clj:1:1) ` and  I believe this namespace issue is causing the problem.

An easy to use SVG library is a great addition to the clojure ecosystem - thanks!