Merge with UltiSnips repo (added fnct to merge)

- UltiSnips: Moved alias snippets from sh to all.

- Aliases: Snippet, commit message.
- Vim: Map fold method, preview and line break to leader keys.

UltiSnips/tex.snippets

@@ -0,0 +1,7 @@
+snippet bf "Boldface" i
+\textbf{$0}
+endsnippet
+
+snippet geq "Geq eqn" i
+$\geq $0$
+endsnippet