Update readme

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

Fixed references

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

Fixup readme

Deprecated maven version and release version 1.1.1 official

update binary and demo file.

Released version 1.1.1-beta called "Santa Claus lives in area 51"

I have released the new version with some bug fixed and new features.

You can see some release note to [this link](https://github.com/vincenzopalazzo/material-ui-swing/releases/tag/v1.1.1-beta)

Merry Christmas from @vincenzopalazzo vincenzopalazzodev@gmail.com

Merge pull request #82 from vincenzopalazzo/workingonversion1.0

Create version 1.0 BETA

Merge pull request #76 from vincenzopalazzo/fixsomeissue

Fixed some issue

Merge pull request #56 from vincenzopalazzo/fix#55

fix the issue #55

Update README.md

fixed jbutton icon issue