Update requirements.txt, use it in various install pathways

Dockerfile

@@ -10,7 +10,7 @@ ENV HOME /root
 RUN \
     apt-get update -y; \
     apt-get -y install msgpack-python python-gevent python-pip python-dev; \
-    pip install msgpack-python --upgrade; \
+    pip install -r requirements.txt --upgrade; \
     apt-get clean -y; \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 

README.md

@@ -111,7 +111,7 @@ It downloads the latest version of ZeroNet then starts it automatically.
 
 * `virtualenv env`
 * `source env/bin/activate`
-* `pip install msgpack-python gevent`
+* `pip install -r requirements.txt`
 * `python zeronet.py`
 * Open http://127.0.0.1:43110/ in your browser
 

Vagrantfile

@@ -40,6 +40,6 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   config.vm.provision "shell",
       inline: "sudo apt-get install msgpack-python python-gevent python-pip python-dev -y"
   config.vm.provision "shell",
-      inline: "sudo pip install msgpack-python --upgrade"
+      inline: "sudo pip install -r requirements.txt --upgrade"
 
 end

requirements.txt

@@ -1,2 +1,3 @@
 gevent>=1.1.0
+i2p.socket>=0.3.1
 msgpack-python>=0.4.4