Added information for black- and whitelisting

Author: Lednerb

README.md

@@ -6,23 +6,48 @@
 
 With this repo you can easily run your own instance of the opentracker for bitorrent.
 
-## How to use it
+## How to run an _open_ opentracker
 If you want to run a complety open tracker, just pull the docker image and spin up a container:
 
 `docker run -d --name opentracker -p 6969:6969/udp -p 6969:6969 lednerb/opentracker-docker`
 
 This will bind the port `6969` to the docker container (UDP and TCP) and you're good to go.
 
 
-If you want to config your opentracker instance, just download or pull the github repository and edit the `opentracker.conf` file.
+## How to run a _customized_ opentracker instance
+
+If you want to config your opentracker instance, just download or `git clone` the [github repository](https://github.com/Lednerb/opentracker-docker/) and edit the `opentracker.conf` file.
 
 Than you have to build your own image as follows:
  1. Edit and save the `opentracker.conf` file
  2. Open a terminal and `cd` into the project folder
  3. Run `docker build -t yourfancyname/opentracker .`
 
-After the docker image was successfully build you can start a container:
+After the docker image was successfully built you can start a container:
 
 `docker run -d --name opentracker -p 6969:6969/udp -p 6969:6969 lednerb/opentracker-docker`
 
+
+## How to whitelist your opentracker torrents
+If you just want to run the opentracker instance for specific torrents you have to whitelist them.
+
+Follow these steps to whitelist your .torrent files:
+ 1. Download or `git clone` the [github repository](https://github.com/Lednerb/opentracker-docker/)
+ 2. Create a file in the project directory named `whitelist.txt`
+ 3. Copy & Paste your torrent info_hashes into the file
+ 4. Uncomment line 37 in the `opentracker.conf`
+ 5. Open a terminal and `cd` into the project folder
+ 6. Run `docker build -t yourfancyname/opentracker .`
 
+Example whitelist.txt:
+```
+0123456789abcdef0123456789abcdef01234567
+890123456789abcdef0123456789abcdef012345
+```
+
+After the docker image was successfully built you can start a container:
+
+`docker run -d --name opentracker -p 6969:6969/udp -p 6969:6969 lednerb/opentracker-docker`
+
+## How to blacklist some torrents
+Just follow the steps from obove but paste the info_hashes into the `blacklist.txt` file and uncomment line 41 in the `opentracker.conf` file.