Add manual pages (#88)

docs/iamb.1.md

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+# NAME
+
+iamb – a terminal-based client for Matrix for the Vim addict
+
+# SYNOPSIS
+
+**iamb** [**--profile** _profile_] [**--config-directory** _directory_] [**--help** | **--version**]
+
+# OPTIONS
+
+These options are primitives at the top-level of the file.
+
+**--profile**, **-P**
+> The profile to start with. Overrides **default_profile** from **iamb(5)**.
+
+**--config-directory**, **-C**
+> Path to the directory the configuration file is located in.
+
+**--help**, **-h**
+> Show a short help text and quit.
+
+**--version**, **-V**
+> Show the iamb version and quit.
+
+# SEE ALSO
+
+**iamb(5)**
+
+Full documentation is available online at \<https://iamb.chat\>