Update gitignore to have a clean dev directory
Update gitignore to have a clean dev directory

xujun10110/AIL-framework,cudeso/AIL-framework,xujun10110/AIL-framework,cudeso/AIL-framework,CIRCL/AIL-framework,cudeso/AIL-framework,CIRCL/AIL-framework,CIRCL/AIL-framework,xujun10110/AIL-framework,cudeso/AIL-framework,xujun10110/AIL-framework,CIRCL/AIL-framework