Test Script Polishing

This change polishes up the test script a bit.  It starts by getting
the godep path using the godep command itself.  Beyond that, there are
some changes to quoting.  Finally, the Travis configuration was
changed to use the runTests script.

Author: nebhale

.travis.yml

@@ -2,6 +2,7 @@
 language: go
 go:
 - 1.4.2
+script: scripts/runTests
 sudo: false
 notifications:
   slack:

scripts/runTests

@@ -13,9 +13,9 @@ function status_on_exit {
 }
 
 function run-in-godep {
-    local goDepsPath=$(cd $(dirname $0)/.. && pwd)/Godeps/_workspace
-    mkdir -p $goDepsPath/bin
-    GOPATH=$goDepsPath:$GOPATH PATH=$goDepsPath/bin:$PATH $@
+    local goDepsPath=$(godep path)
+    mkdir -p "${goDepsPath}/bin"
+    GOPATH="${goDepsPath}:${GOPATH}" PATH="${goDepsPath}/bin:${PATH}" "$@"
 }
 
 # Install ginkgo (from Godeps) into Godeps workspace
@@ -25,6 +25,6 @@ run-in-godep go install -v github.com/onsi/ginkgo/ginkgo
 trap status_on_exit EXIT
 
 # Announce test run
-    echo; echo ginkgo $ginkgoTags "$@"; echo
+echo; echo ginkgo ${ginkgoTags} "$@"; echo
 # Run all tests under Godeps environment
-run-in-godep ginkgo $ginkgoTags "$@"
+run-in-godep ginkgo ${ginkgoTags} "$@"