Change minimum golang to 1.10

Author: vjanelle

.travis.yml

@@ -3,12 +3,9 @@ language: go
 
 matrix:
   include:
-    - go: 1.8.x
-    - go: 1.9.x
     - go: 1.10.x
     - go: 1.11.x
     - go: master
-    - go: 1.8.1
       os: osx
       env: BUILD_TAGS=
   allow_failures:

README.md

@@ -8,7 +8,7 @@
 
 CFSSL is CloudFlare's PKI/TLS swiss army knife. It is both a command line
 tool and an HTTP API server for signing, verifying, and bundling TLS
-certificates. It requires Go 1.8+ to build.
+certificates. It requires Go 1.10+ to build.
 
 Note that certain linux distributions have certain algorithms removed
 (RHEL-based distributions in particular), so the golang from the
@@ -30,7 +30,7 @@ CFSSL consists of:
 ### Building
 
 Building cfssl requires a
-[working Go 1.8+ installation](http://golang.org/doc/install) and a
+[working Go 1.10+ installation](http://golang.org/doc/install) and a
 properly set `GOPATH`.
 
 ```
@@ -62,7 +62,7 @@ You can set the `GOOS` and `GOARCH` environment variables to have Go cross compi
 ### Installation
 
 Installation requires a
-[working Go 1.8+ installation](http://golang.org/doc/install) and a
+[working Go 1.10+ installation](http://golang.org/doc/install) and a
 properly set `GOPATH`.
 
 ```
@@ -238,7 +238,10 @@ the key request as a JSON file. This file should follow the form:
 {
     "hosts": [
         "example.com",
-        "www.example.com"
+        "www.example.com",
+        "https://www.example.com",
+        "jdoe@example.com",
+        "127.0.0.1"
     ],
     "key": {
         "algo": "rsa",