Fix docs build, disable C++ tests (#23)

It seems docs fail to build because C++ code dynamically clones a repo -
which is not something docs (and some other systems) allow to do.
Disabling google tests - we don't use them anyway, so compilation should
be faster too.

Author: nyurik

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "fastpfor"
-version = "0.6.0"
+version = "0.6.1"
 description = "FastPFOR library written in Rust."
 authors = ["Francisco Jimenez <jjcfrank@gmail.com>", "Yuri Astrakhan <YuriAstrakhan@gmail.com>"]
 repository = "https://github.com/jjcfrancisco/fastpfor"

build.rs

@@ -9,7 +9,10 @@ fn main() {
 
         // Compile FastPFOR using CMake
         println!("cargo:rerun-if-changed=cpp");
-        let lib_path = cmake::Config::new("cpp").build().join("lib");
+        let lib_path = cmake::Config::new("cpp")
+            .define("WITH_TEST", "OFF")
+            .build()
+            .join("lib");
         let lib_path = lib_path.to_str().unwrap();
 
         // Compile the bridge