Download link for bsh.jar in readme.md does not work

[TianYuanSX]

Hi, thanks for your useful tool.

I just found that the download link for bsh.jar in the readme.md doesn't work.

https://bintray.com/artifact/download/beanshell/Beanshell/org/apache-extras/beanshell/bsh/2.0b6/bsh-2.0b6.jar

Maybe you can replace it with a correct one.

[nickl-]

duplicate #744