Add to contributing guidelines

CONTRIBUTING.md

@@ -2,21 +2,35 @@
 
 When making a pull request, please follow these guidelines:
 
-- One commit per suggestion
-- Commit message should follow this format: `Add some tool name`
+- One commit per suggestion is preferred
+- Commit message should follow this format: `Add some tool name` (For
+  example, `Add cuckoo-sandbox`) [Why?](http://chris.beams.io/posts/git-commit/)
 - Multiple commits per pull request is OK
-- Lists within each section are alphabetized
+- Lists within each section are alphabetized, please keep them that way
 - Add sections if necessary, use existing sections if possible
-- Clear, concise descriptions for each link, followed by a period
+- Clear, concise descriptions for each link, starting with a capital, ending
+  with a period
 - Use the following format: `[Item Name](homepage link) - Description.`
 - No duplication of tools, put them where they make the most sense
 - Wrap lines at ~80 chars, no trailing whitespace or unnecessary newlines
 - Prefer quality over quantity, only submit awesome stuff
 - By submitting a pull request, you agree to release your submission under
   the [LICENSE](LICENSE)
+- Indent wrapped lines even with the start of the line before
+
+```
+- That means lines wrap like
+  this
+- Not
+like this
+```
+
 
 The rules above take precedence, but in case I missed something, check [the
 awesome guidelines](https://github.com/sindresorhus/awesome/blob/master/contributing.md)
 too.
 
+Properly formatted pull requests will almost always be approved faster than
+issues or poorly formatted pull requests, because they mean less work for me!
+
 Thanks!