added link to gradle

added link to gradle
behavior when percentDialog closes

- checkbox gets checked
- navigation drawer gets closed
added greyscale to the example app

added greyscale to the example app and I removed the according javadoc
from the library
possibility to change the % sign

possibility to change the % sign, no sure if someone ever will use
this, but why not :)
custom colourdialog, javadoc

- added a custom rub color choosing dialog
- added some javadoc
- added the @since 1.4.0 javadoc to the new stuff
Update README.md

As said in the pull request #13, I added a link to @elodieferrais fork.
extended opacity

added the possibility to invert the behavior of the opacity.
bug fix of the rgbchooser

now the color gets initially set to the dialog
moved dialogs to package

moved all dialogs to an own package, so the main package isn't that
crowded.
cleanup

- format
- strings (lint)
bugfix

bugfix
change the text color

you can set the color of the percent text now via the PercentStyle
object.
added new option

not possibility to remove the progressbar on 100%, default its false
layout fix

layout fix
fixes navigation

fixes navigation, last item now showing
enhanced layout

enhanced layout
new image

- added image of the operahuset in oslo
- changed the default image
Update README.md
Update README.md
Update README.md