Move Emacs documents to //emacs

These documents outline some of my Elisp conventions and ideas. As such,
I think //emacs should host them.

emacs/snippets.md

@@ -0,0 +1,22 @@
+# Snippets
+
+Specifying snippets that I plan on defining for most of the programming
+languages with which I work. I hope this will serve as a checklist of language
+constructs I should support when adopting a new language.
+
+## Shared language features
+
+These are language features that should be available across most of the
+languages that I'm hoping to support.
+
+- `ld`: anonymous functions (i.e. lambdas)
+- `fn`: named function definition
+- `var`: variable definition
+
+## Miscellaneous other language KBDs
+
+Some of this is related to language tool must-haves, which may need to be a
+separate document.
+
+- `<leader>d`: Show documentation
+- `<leader>x`: Evaluate expression (works mostly for LISPs)