Updated Install (markdown)

Install.md

@@ -1,3 +1,36 @@
-Currently, see [install](https://github.com/hrfee/jellyfin-accounts#install). 
+## Debian
+First, acquire the software.
 
-(Note: A simple guide for setting up with a reverse proxy and, say, gmail smtp would be useful.)
+`hrfee@lab:~$ git clone https://github.com/hrfee/jellyfin-accounts.git`
+
+Next, enter the directory and run the install.
+
+```
+hrfee@lab:~$ cd jellyfin-accounts
+hrfee@lab:~$ python3 setup.py install
+```
+
+Like me, you might encounter an error here.
+On some systems, flask's dependency `python-ldap` has trouble building.
+```
+  Modules/constants.h:7:10: fatal error: lber.h: No such file or directory
+   #include "lber.h"
+            ^~~~~~~~
+  compilation terminated.
+  error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
+  
+  ----------------------------------------
+  Failed building wheel for python-ldap
+```
+
+To remedy this, some of its own dependencies need installing.
+
+`hrfee@lab:~$ sudo apt-get install libsasl2-dev python-dev libldap2-dev libssl-dev`
+
+Then all you need to do is re-run `python3 setup.py install`.
+
+## Other OSes
+It should be as simple as `python3 setup.py install`. If not, submit an issue.
+
+## What next?
+See [setup](https://github.com/hrfee/jellyfin-accounts/wiki/Setup).