Add alias-tips plugin

.gitmodules

@@ -16,3 +16,6 @@
 [submodule "modules/prompt/functions/pure"]
 	path = modules/prompt/external/pure
 	url = https://github.com/sindresorhus/pure.git
+[submodule "modules/alias-tips/external"]
+	path = modules/alias-tips/external
+	url = https://github.com/jedahan/alias-tips

modules/alias-tips/README.md

@@ -0,0 +1,40 @@
+Alias Tips
+==========
+
+Integrates [alias-tips][1] into Prezto, which reminds you
+whenever the command you just ran has an defined alias.
+
+Settings
+--------
+
+### Text
+
+To change the tip text prefix, add the following line to *zpreztorc*:
+
+    zstyle ':prezto:module:alias-tips' text '💡 '
+
+To exclude certain commands
+
+    zstyle ':prezto:module:alias-tips' exclude '_ c'
+
+To automatically expand the alias
+
+    zstyle ':prezto:module:alias-tips' expand 'yes'
+
+
+Contributors
+------------
+
+New features and bug fixes should be submitted to the
+[alias-tips][1] project according to its rules and
+regulations. This module will be synchronized against it.
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][2].*
+
+  - [Jonathan Dahan](https://github.com/jedahan)
+
+[1]: https://github.com/djui/alias-tips
+[2]: https://github.com/sorin-ionescu/prezto/issues

modules/alias-tips/external

@@ -0,0 +1 @@
+Subproject commit d753920778d09571d4b20f7e35e5a23af79f848c

modules/alias-tips/init.zsh

@@ -0,0 +1,21 @@
+#
+# Integrates alias-tips into Prezto.
+#
+# Authors:
+#   Jonathan Dhan <hi@jonathan.is>
+#
+
+# Source module files.
+
+# Options
+zstyle -s ':prezto:module:alias-tips' text 'ZSH_PLUGINS_ALIAS_TIPS_TEXT' && \
+  export 'ZSH_PLUGINS_ALIAS_TIPS_TEXT'
+
+zstyle -s ':prezto:module:alias-tips' excludes 'ZSH_PLUGINS_ALIAS_TIPS_EXCLUDES' && \
+  export ZSH_PLUGINS_ALIAS_TIPS_EXCLUDES
+
+if zstyle -t ':prezto:module:alias-tips' expand; then
+  export ZSH_PLUGINS_ALIAS_TIPS_EXPAND=1
+fi
+
+source "${0:h}/external/alias-tips.plugin.zsh" || return 1