feat(cargo): crates with 'google-' prefix

Fixes #23

src/mako/Cargo.toml.mako

@@ -5,7 +5,7 @@
 </%block>
 [package]
 
-name = "${util.library_name()}"
+name = "${util.crate_name()}"
 version = "${cargo.build_version}"
 authors = [${",\n           ".join('"%s"' % a for a in cargo.authors)}]
 description = "A complete library to interact with ${util.canonical_name()} (protocol ${version})"

src/mako/lib/lib.mako

@@ -116,7 +116,7 @@ To use this library, you would put the following lines into your `Cargo.toml` fi
 
 ```toml
 [dependencies]
-${util.library_name()} = "${cargo.build_version}"
+${util.crate_name()} = "${cargo.build_version}"
 ```
 
 ${'##'} A complete example

src/mako/lib/util.mako

@@ -23,13 +23,17 @@ ${cargo.repo_base_url}/${OUTPUT_DIR}\
 ${util.library_name(name, version)}\
 </%def>
 
+<%def name="crate_name()" buffered="True">\
+google-${self.library_name()}\
+</%def>
+
 ## All crates and standard `use` declaration, required for all examples
 ## Must be outside of a test function
 <%def name="test_prelude()">\
 extern crate hyper;
 extern crate "yup-oauth2" as oauth2;
 extern crate "rustc-serialize" as rustc_serialize;
-extern crate ${self.library_name()};
+extern crate "${self.crate_name()}" as ${self.library_name()};
 </%def>
 
 ## Define the canonical name, if present, or name otherwise