Bump golang version to 1.10

Allows local builds in golang 1.10 on OS X to work.  Done as part of
needing a new spin for new OS X version (10.13).

Author: Nick Silkey

.travis.yml

@@ -1,7 +1,7 @@
 language: go
 
 go:
-  - 1.4
+  - 1.10
 
 sudo: false
 

script/build

@@ -15,7 +15,8 @@ build() {
 
     # Check the go version
     EQ="="
-    regex="(go[0-1].[0-4])"
+    # If we are golang <= 1.4, ' ' for EQ ... else '='
+    regex="(go[0-1].[0-4](?![0-9]))"
     if [[ `go version` =~ $regex ]]; then
         EQ=" "
     fi