Update go version in travis to 1.7.3 (#74)

yyoshiki41 · bradleyfalzon · commit c592f56194d4 · 2016-11-03T08:19:46.000+10:30
diff --git a/.travis.yml b/.travis.yml
@@ -5,7 +5,7 @@ go:
  - 1.4.3
  - 1.5.4
  - 1.6.3
- - 1.7.1
+ - 1.7.3
  - tip
 
 # Required for coverage.

-Original file line number
+Diff line change
  - 1.4.3
  - 1.5.4
  - 1.6.3
 - - 1.7.1
 + - 1.7.3
  - tip
 # Required for coverage.