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/snippets.snippets

@@ -0,0 +1,10 @@
+snippet ts "Tabstop" i
+${${1:number}:${2:default}}	
+endsnippet
+
+snippet "b(egin)?" "begin{} / end{}" br
+\begin{${1:something}}
+	${0:${VISUAL}}
+\end{$1}
+endsnippet
+