Fix release task

We can't use a tag that looks like a version number, because npm will
fail.

Author: rafaelfranca

tasks/release.rb

@@ -127,8 +127,7 @@
           if /[a-z]/.match?(version)
             npm_tag = " --tag pre"
           else
-            local_major_version = version.split(".", 4)[0]
-            npm_tag = " --tag v#{local_major_version}"
+            npm_tag = " --tag latest"
           end
 
           sh "npm publish#{npm_tag}#{npm_otp}"