Patch for bug #3 and #4

git-svn-id: https://svn.code.sf.net/p/proj4php/code/trunk@23 7b26fc74-cbda-4134-b5c1-02737463f037
changed the recursive call of function 'transform' to call of seperate function 'doTransform'. 

git-svn-id: https://svn.code.sf.net/p/proj4php/code/trunk@24 7b26fc74-cbda-4134-b5c1-02737463f037
Add composer.json