Text portion of an XmlNode type

[pietroppeter]

to access text content of a generic `XmlNode` you can use 
[innerText](https://nim-lang.org/docs/xmltree.html#innerText%2CXmlNode).

The node you create is not of kind `xnText` and so it does not have a `text` 
attribute. It does have a child (it can have multiple children), which is of 
kind `xnText`. Compare your code with the 
[following](https://play.nim-lang.org/#ix=46lC):
    
    
    import xmltree
    
    var e = newElement("elem")
    e.add newText("some text")
    echo typeof e
    echo e.kind
    echo e
    echo e.innerText
    e.add newText(" and other text")
    echo e.innerText
    echo ""
    
    var f = newText("some text")
    echo typeof f
    echo f.kind
    echo f.text
    
    
    Run

output:
    
    
    XmlNode
    xnElement
    <elem>some text</elem>
    some text
    some text and other text
    
    XmlNode
    xnText
    some text
    
    
    Run