Fill README with details

README

@@ -1,5 +1,48 @@
 pinentry-dmenu
 ==============
 
-This program is a fork from [spine](https://gitgud.io/zavok/spine.git).
+pinentry-dmenu is a pinentry program with the charm of [dmenu](https://tools.suckless.org/dmenu).
+
+This program is a fork from [spine](https://gitgud.io/zavok/spine.git) which is also a fork from [dmenu](https://tools.suckless.org/dmenu).
+
+
+Requirements
+------------
+In order to build dmenu you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (dmenu is installed into the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install dmenu
+(if necessary as root):
+
+	make clean install
+
+
+Config
+------
+To use pinentry-dmenu add in `~/.gnupg/gpg-agent.conf`:
+
+	pinentry-program <absolut path to pinentry-dmenu>
+
+The config is located in `~/.gnupg/pinentry-dmenu.conf`.
+
+^ Parameter           ^ Default           ^ Description ^
+| asterisk            | *                 | Defines the symbol which is showed for each typed character |
+| buttom              | false             | pinentry-dmenu appears at the bottom of the screen |
+| min_password_length | 32                | The minimal space of the password field. This value has affect to the description field after the password field |
+| monitor             | -1                | pinentry-dmenu is displayed on the monitor number supplied. Monitor numbers are starting from 0 |
+| prompt              | ""                | Defines the prompt to be displayed to the left of the input field |
+| font                | monospace:size=10 | Defines the font or font set used |
+| prompt_bg           | #bbbbbb           | Defines the prompt background color |
+| prompt_fg           | #222222           | Defines the prompt foreground color |
+| normal_bg           | #bbbbbb           | Defines the normal background color |
+| normal_fg           | #222222           | Defines the normal foreground color |
+| select_bg           | #eeeeee           | Defines the selected background color|
+| select_fg           | #005577           | Defines the selected foreground color |
+| desc_bg             | #bbbbbb           | Defines the description background color |
+| desc_fg             | #222222           | Defines the description foreground color |
+| embedded            | false             | Embed into window |