snippet: Add erlang-mode snippets

This commit adds initial support for Erlang snippets. These snippets
have been copied directly from the defaults.

* erlang-mode/after: Snippet for the `after` expression
* erlang-mode/begin: Snippet for the `begin` expression
* erlang-mode/beh: Snippet for the `behaviour` expression
* erlang-mode/case: Snippet for the `case` expression
* erlang-mode/compile: Snippet for the `compile` expression
* erlang-mode/def: Snippet for the `define` expression
* erlang-mode/exp: Snippet for the `export` expression
* erlang-mode/fun: Snippet for the `fun` expression
* erlang-mode/if: Snippet for the `if` expression
* erlang-mode/ifdef: Snippet for the `ifdef` expression
* erlang-mode/ifndef: Snippet for the `ifndef` expression
* erlang-mode/imp: Snippet for the `import` expression
* erlang-mode/inc: Snippet for the `include` expression
* erlang-mode/inc.lib: Snippet for the `include_lib` expression
* erlang-mode/loop: Snippet for the `loop` expression
* erlang-mode/rcv: Snippet for the `recieve` expression
* erlang-mode/rcv.after: Snippet for the `receive after` expression
* erlang-mode/rec: Snippet for the `record` expression
* erlang-mode/try: Snippet for the `try` expression
* erlang-mode/undef: Snippet for the `undef` expression

Close: #55
Ref: https://github.com/AndreaCrotti/yasnippet-snippets/tree/master/snippets/erlang-mode
Signed-off-by: Benjamin Philip <[email protected]>

Author: Benjamin-Philip

erlang-mode/after

@@ -0,0 +1,5 @@
+# -*- mode: snippet -*-
+# name: after ... ->
+# --
+after
+    $1 -> $0

erlang-mode/begin

@@ -0,0 +1,6 @@
+# -*- mode: snippet -*-
+# name: begin ... end
+# --
+begin
+    $0
+end

erlang-mode/beh

@@ -0,0 +1,5 @@
+# -*- mode: snippet -*-
+# name: -behaviour(...).
+# --
+-behaviour(${1:gen_server}).
+$0

erlang-mode/case

@@ -0,0 +1,6 @@
+# -*- mode: snippet -*-
+# name: case ... of ... end
+# --
+case $1 of
+    $0
+end

erlang-mode/compile

@@ -0,0 +1,5 @@
+# -*- mode: snippet -*-
+# name: -compile(...).
+# --
+-compile([${1:export_all}]).
+$0

erlang-mode/def

@@ -0,0 +1,5 @@
+# -*- mode: snippet -*-
+# name: -define(...,...).
+# --
+-define($1,$2).
+$0

erlang-mode/exp

@@ -0,0 +1,5 @@
+# -*- mode: snippet -*-
+# name: -export([]).
+# --
+-export([${1:start/0}]).
+$0

erlang-mode/fun

@@ -0,0 +1,4 @@
+# -*- mode: snippet -*-
+# name: fun (...) -> ... end
+# --
+fun ($1) -> $0 end

erlang-mode/if

@@ -0,0 +1,7 @@
+# -*- mode: snippet -*-
+# name: if ... -> ... ; true -> ... end
+# --
+if
+    $1 -> $2;
+    true -> $0
+end

erlang-mode/ifdef

@@ -0,0 +1,6 @@
+# -*- mode: snippet -*-
+# name: -ifdef(...). ... -endif.
+# --
+-ifdef($1).
+$0
+-endif.