Add install instructions

Also, copy them to packaged application.

INSTALL

@@ -0,0 +1,18 @@
+
+INSTALLING HTMLHOUSE
+--------------------
+
+1. Extract the archive.
+2. Run keys.sh to generate keys. This will generate a keypair in the
+   application's directory named `prod` and `prod.pub`.
+   BACK UP THESE FILES outside the application directory. If these change, 
+   users won't be able to edit their posts anymore.
+3. Run the application. Here's an example script:
+
+   export DB_USER=dbuser
+   export DB_PASSWORD=pass
+   export DB_DB=htmlhouse
+   export PRIVATE_KEY=keys/prod
+   export PUBLIC_KEY=keys/prod.pub
+   export PORT=8080
+   ./htmlhouse -h="http://localhost:8080"

build.sh

@@ -24,6 +24,7 @@ cp static/css/*.css build/static/css/
 cp -r static/js/* build/static/js/
 cp -r templates/ build/
 cp keys.sh build/
+cp INSTALL build/
 
 echo -e "$L Building application..."
 cd main/