Not working for stateless components

[NochEinKamel]

If you add the mixin to stateless components there is a null-error in line 104:

index.js:104 - Uncaught TypeError: Cannot set property 'renderLog' of null.

Solution would probably be to add the getInitialState method to the mixin.

        getInitialState: function() {
            return {
                renderLog: [],
                renderCount: 1
            };
        },

[magus]

See #3