Auto merge of #170 - froydnj:test-file-packaging, r=SimonSapin

actually exclude test files from packaging

package.exclude takes glob syntax for determining what files to exclude
when excluding directories.

Fixes #169.

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Author: bors-servo

Cargo.toml

@@ -12,7 +12,7 @@ keywords = ["css", "syntax", "parser"]
 license = "MPL-2.0"
 build = "build.rs"
 
-exclude = ["src/css-parsing-tests"]
+exclude = ["src/css-parsing-tests/**", "src/big-data-url.css"]
 
 [dev-dependencies]
 rustc-serialize = "0.3"