Regenerate gemspec for version 0.2.1
Regenerate gemspec for version 0.2.1

maximgladkov/activeadmin-dropzone,maximgladkov/activeadmin-dropzone,farpostdesign/activeadmin-dropzone,farpostdesign/activeadmin-dropzone,Wasappli/activeadmin-dropzone,maximgladkov/activeadmin-dropzone,Wasappli/activeadmin-dropzone,Wasappli/activeadmin-dropzone,farpostdesign/activeadmin-dropzone