Added a building guide

README.md

@@ -1,3 +1,30 @@
 # PasteMyst
 
 A lightweight and simple website for pasting text, mainly code snippets.
+
+## Building
+
+Dependencies:
+
+* mariadb-server
+
+You'll need to have an `appsettings.json` file in the root of the project which will contain:
+
+```json
+{
+    "dbConnection": "host=localhost;user=CodeMyst;db=PasteMyst",
+    "hashidsSalt": "pastemyst"
+}
+```
+
+The `dbConnection` property is the connection string for connecting to the MariaDB. You can also specify the password for the database like so:
+
+```json
+"host=localhost;user=CodeMyst;db=PasteMyst;pwd=password"
+```
+
+The `hashidsSalt` property is the salt used by [hashids](https://hashids.org/) to generate IDs for PasteMysts.
+
+In [index.dt](/views/index.dt) you'll see that a Google reCAPTCHA key is required. You'll have to generate your own at [reCAPTCHA docs](https://developers.google.com/recaptcha/intro).
+
+To build / run the project simply run `dub build` / `dub run`.