Update README.md

Author: cweibel

README.md

@@ -1,7 +1,7 @@
 # terraform-module-cf-tcp-lb
 Terraform to create the load balancer for CF TCP Routing
 
-This module will spin an ELB for CF TCP Routing.  This could also be a NLB but there is a hard limit on the number of listeners much lower than for ELBs.
+This module will spin an ELB (default) or NLB for CF TCP Routing.  Note that there is a hard limit on the number of listeners for NLBs which is much lower than for ELBs.
 
 Inputs - Required:
 
@@ -12,13 +12,14 @@ Inputs - Required:
  - `route53_zone_id` - Route53 zone id
  - `private_cidrs` - CIDR ranges of all non-public ipv4 addresses
  - `security_groups ` - security group ids for bosh & deployments
- 
-
 
 Inputs - Optional: 
 
  - `enable_route_53` - Disable if using CloudFlare or other DNS (default = 1, to disable, set = 0)
  - `internal_lb` - Determine whether the load balancer is internal-only facing (default = true)
+ - `start_port` - The starting range of ports to use for an ELB ( default = 40000 )
+ - `end_port` - The starting range of ports to use for a NLB ( default = 40010 )
+ - `type` - Choose your adventure on ELB v NLB ( default = "elb" )
 
 Outputs: