Merge pull request #41 from DataDog/remeh/codeowners

Add codeowners file.

.github/CODEOWNERS

@@ -0,0 +1,9 @@
+# See https://help.github.com/articles/about-codeowners/ for syntax
+# Rules are matched bottom-to-top, so one team can own subdirectories
+# and another team can own the rest of the directory.
+
+# All files reviwed by maintainers
+*                     @DataDog/agent-metrics-logs
+
+# Documentation includes docs team
+*.md                  @DataDog/documentation