add .gitignore
add .gitignore

jason-luo/JDeSurvey,GlgnhofCross/Gtesting,designreuse/JDeSurvey,jason-luo/JDeSurvey,designreuse/JDeSurvey,JD-Software/JDeSurvey,JD-Software/JDeSurvey,JD-Software/JDeSurvey,GlgnhofCross/Gtesting,jason-luo/JDeSurvey,GlgnhofCross/Gtesting,designreuse/JDeSurvey