Include all the base contributor docs

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = "utf-8"
+
+insert_final_newline = true
+trim_trailing_whitespace = true

docs/ADDING_ISSUES.markdown

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+# Guidelines for Adding Issues to SparkPost
+Thank you for finding an issue, the SparkPost SDKs are open sourced and focused on helping our developers to be successful. Please review the following checklist before submitting a new issue.
+
+1. To prevent duplication, please search for issues and make sure it doesn’t already exist
+2. Please provide the following information to help our contributors in resolving the issue:
+    1. Operating System and Version
+    2. Programming language version
+    3. Exception, error or issue summary
+    4. Recreation steps or Use case summary
+    5. Example data (if available)
+    6. Expected result or desired functionality
+    7. Any extra information you’d like to provide
+3. Please give your issue a meaningful name
+4. Please, no trolling or flaming comments on issues (counter-productive)
+5. Please follow/watch your issue. We expect you to take issue reporting as seriously as we do.