extended configuration (to hande Kitkat issues)
readme updates
segments2 -> segemnts3
fixed nullpointer at startup
improve downloading GPX+KML:
- "Content-Disposition: attachment" header with "filename"
- specific mime-types
resolves nrenner/brouter-web#6
Merge pull request #21 from nrenner/download

improve downloading GPX+KML
version number change to 1.0.2