move tests instructions for global README

test/README

-Basic requirements
-    ruby >= 1.8.7
-    rubygems >= 1.6.2
-    gem install bundler
-
-To run this tests you need to install some gems
-
-You can install with bundler (bundler is required to be installed before)
-    bundle install
-or individually
-    gem install --remote --include-dependencies POpen4 -v 0.1.4
-    gem install --remote --include-dependencies em-http-request -v 0.2.14
-    gem install --remote --include-dependencies json -v 1.4.3
-
-Some more steps are needed once you have built and/or installed Nginx
-
-Choose nginx binary to run tests against
-    export NGINX_EXEC="/usr/local/nginx/sbin/nginx"
-    export NGINX_EXEC="../build/nginx-0.7.68/objs/nginx"
-    export NGINX_EXEC="../build/nginx-0.8.54/objs/nginx"
-
-Then issue
-    ruby suite.rb