Merge pull request #24 from nicolasnoble/extra-files

Adding few stray files.

.editorconfig

@@ -0,0 +1,7 @@
+root = true
+[**]
+end_of_line = LF
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+tab_width = 8

.istanbul.yml

@@ -0,0 +1,6 @@
+reporting:
+    watermarks:
+        statements: [80, 95]
+        lines: [80, 95]
+        functions: [80, 95]
+        branches: [80, 95]

CODE-OF-CONDUCT.md

@@ -0,0 +1,3 @@
+## Community Code of Conduct
+
+gRPC follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/master/code-of-conduct.md).