Disable SSL peer validation #166

There should be a way to disable SSL verification to authenticate with bearer tokens.

Something like this would do:

// set a non-existing file for the CA file, should allow access anyway
conn->SetCAInfoFilePath("non-existent file");
conn->SetVerifyPeer(false);
RestClient::Response res = conn->get("/get");

EXPECT_EQ(200, res.code);