Add doc for aliases (#408)

README.md

@@ -50,6 +50,7 @@ There are multiple ways to use **navi**:
    - pros: you have access to all possible subcommands and flags
 - by invoking it via a [shell widget](docs/installation.md#installing-the-shell-widget) in the terminal
    - pros: the shell history is correctly populated (i.e. with the actual command you ran instead of `navi`) and you can edit the command as you wish before executing it
+- as [aliases](docs/aliases.md)
 - as a [shell scripting tool](docs/shell_scripting.md)
 - as an [Alfred workflow](docs/alfred.md)
 

docs/aliases.md

@@ -0,0 +1,40 @@
+Aliases
+----------------------------
+
+**navi** doesn't have support for aliases as first-class citizens at the moment.
+
+However, it should be trivial to create aliases using **navi** + a few conventions.
+
+For example, suppose you decide to end some of your commands with `:: <some_alias>`:
+
+```bash
+% aliases
+
+# This is one command :: el
+echo lorem ipsum
+
+# This is another command :: ef
+echo foo bar
+```
+
+Then, if you use **navi** as a [shell scripting tool](shell_scripting.md), you could add something similar to this in your `.bashrc`-like file:
+
+```bash
+navialias() {
+    navi --query ":: $1" --best-match
+}
+
+alias el="navialias el"
+alias ef="navialias ef"
+```
+
+If you don't want to use these conventions, you can even add full comments in your aliases:
+
+```bash
+navibestmatch() {
+    navi --query ":: $1" --best-match
+}
+
+alias el="navibastmatch 'This is one command'"
+alias ef="navibastmatch 'This is another command'"
+```