How To Install WeSketch?
in README, you provide two steps:
1 .Click Download and unzip。 (Support Sketch 44+)  
2 .Double click wesketch.sketchplugin to install
but when I download and upzip,  it really have wesketch.sketchplugin file, but I can not double click this, under this folder, it just show me the source code, so how can i install and use WeSketch?