added issue template

.github/issue_template.md

@@ -0,0 +1,18 @@
+### Reporting Bugs/Errors
+When reporting errors, 99% of the time log file output is required. Please post the log file as a [gist](https://gist.github.com/) and provide a link in the new issue.
+
+### Reporting False Positives
+When reporting a false positive please include:
+- The location of the dependency (Maven GAV, URL to download the dependency, etc.)
+- The CPE that is believed to be false positive
+  - Please report the CPE not the CVE
+
+##### Example
+False positive on library foo.jar - reported as CPE:/a:apache:tomcat:7.0
+```xml
+<dependency>
+   <groupId>org.sample</groupId>
+   <artifactId>foo</artifactId>
+   <version>1.0</version>
+</dependency>
+```