Pptx 1.x

Ok, redux.  Now based on the 1.1 branch with a regex for slide searching  

Feedback appreciated!

```
var docx = require('docxtemplater');

var fs = require('fs');
content=fs.readFileSync(__dirname+"/CM-Template-double.pptx","binary")
doc=new docx.PptxGen(content);
doc.setData({
  "first_name":"Hipp",
  "last_name":"Edgar",
  "phone":"0652455478",
  "description":"New Website"
})
doc.render()
zip=doc.getZip()

var output = zip.generate({type:"arraybuffer"}),
    buffer = new Buffer(output.byteLength);

for (var i = 0; i < buffer.length; ++i) {
    buffer[i] = output[i];
}
fs.writeFileSync(__dirname + "/output.pptx", buffer);
```