Misspalced paragraphs in Readme.md

[lefmixalch]

In the section that describes the events there is a slight mess in the discriptions of the events 'field', 'fileBegin' and 'file' - paragraphs obviosly missplaced.
Here's the screenshot:

[gabeio]

I concur, so I made a pull request fix for this.

[felixge]

fixed in b7ef166