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/all.snippets

@@ -0,0 +1,17 @@
+snippet alias "Custom alias"
+alias ${1:name}="${2:cmd}"
+endsnippet
+
+snippet 1lf "One-line function"
+${1:name}() { ${2:cmd} ; } 
+endsnippet
+
+snippet mlf "Multi-line function"
+${1:name}() { 
+	${2:cmd} 
+} 
+endsnippet
+
+snippet ltx "LaTeX" i
+LaTeX
+endsnippet