Adding gitignore
Adding gitignore

empereor/cvrf-to-html,STIXProject/stix-to-html,empereor/cvrf-to-html,empereor/cvrf-to-html,STIXProject/stix-to-html,STIXProject/stix-to-html,empereor/cvrf-to-html,STIXProject/stix-to-html