make SDLVersion fields publib; fix build dir error in .travis.yml

.travis.yml

@@ -3,6 +3,7 @@ before_install:
   - sudo apt-get update
 install:
   - sudo apt-get install rust-nightly
+  - cd ..
   - time wget -q http://www.libsdl.org/release/SDL2-2.0.3.tar.gz
   - time wget -q http://www.libsdl.org/projects/SDL_ttf/release/SDL2_ttf-2.0.12.tar.gz
   - time tar xf SDL2-*.tar.gz

src/sdl2_ttf/lib.rs

@@ -80,9 +80,9 @@ fn color_to_c_color(color: Color) -> SDL_Color {
 /// FIXME: this type should be in rust-sdl2 package
 #[deriving(Eq, Clone)]
 pub struct SDLVersion {
-    major: int,
-    minor: int,
-    patch: int,
+    pub major: int,
+    pub minor: int,
+    pub patch: int,
 }
 
 impl fmt::Show for SDLVersion {