commit against tests run is fixed

renamed tmpLinguist to repoLinguist and SimpleLinguistTestSuite to EnryTestSuit in common_test.go

changed receiver's name for TestSuites to 's'

fixed comments

internal/code-generator/assets/commit.go.tmpl

@@ -0,0 +1,8 @@
+package enry
+
+// CODE GENERATED AUTOMATICALLY WITH gopkg.in/src-d/enry.v1/internal/code-generator
+// THIS FILE SHOULD NOT BE EDITED BY HAND
+// Extracted from github/linguist commit: {{ . }}
+
+// linguist's commit from which files were generated.
+var linguistCommit = "{{- . -}}"