[librsvg/rustification] Cargo.toml: Use my git repo of gtk-rs/cairo for now

[Federico Mena Quintero <federico src gnome org>]

commit 6eb8d2305887e0a6b7f80790a6dfe8d9081a9b17
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Oct 31 21:25:42 2016 -0600

    Cargo.toml: Use my git repo of gtk-rs/cairo for now
    
    We need to be able to wrap cairo_path_t, and the stock cairo binding doesn't
    allow that.

 rust/Cargo.toml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 68e3130..dcbb3a1 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Federico Mena Quintero <federico gnome org>"]
 
 [dependencies]
 libc = "0.2"
-cairo-rs = { git = "file:///home/federico/src/gtk-rs/cairo" }
+cairo-rs = { git = "https://github.com/federicomenaquintero/cairo.git"; }
 
 [lib]
 name = "rsvg_internals"