grape urls should not depend on trailing slashes

[robertkowalski]

grape_address should work, even if no trailing slash is added.

require_relative '../lib/grenache-ruby-http.rb'


# note the missing trailing slash
c = Grenache::Http.new grape_address: "http://127.0.0.1:40002"

start_time = Time.now

10.times do |n|
  err,resp = c.request("rpc_test","world #{n}")
  if !err
    puts "response: #{resp}"
  else
    puts err
  end
end

puts "Total Time: #{Time.now - start_time}"

results in:

bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
bad URI(is not URI?): http://127.0.0.1:40001lookup
Total Time: 0.003347