Add .travis.yml, update tests and Cargo.toml for upstream changes

.travis.yml

@@ -0,0 +1,15 @@
+
+before_install:
+  - sudo add-apt-repository --yes ppa:hansjorg/rust
+  - sudo add-apt-repository --yes ppa:cmrx64/cargo
+  - sudo apt-get update -qq
+install:
+  - sudo apt-get install -qq rust-nightly cargo
+  - git clone https://github.com/sipa/secp256k1.git
+  - cd secp256k1
+  - ./autogen.sh && ./configure && make && sudo make install
+  - sudo ldconfig /usr/local/lib
+script:
+  - cargo build
+  - cargo test
+

Cargo.toml

@@ -6,6 +6,6 @@ authors = [
 	"Dawid Ciężarkiewicz <dpc@ucore.info>"
 	]
 
-[[lib]]
+[lib]
 name = "bitcoin-secp256k1-rs"
 path = "src/secp256k1.rs"

src/key.rs

@@ -288,7 +288,7 @@ mod test {
     use std::rand::task_rng;
 
     use super::super::{Secp256k1, InvalidNonce, InvalidPublicKey, InvalidSecretKey};
-    use super::*;
+    use super::{Nonce, PublicKey, SecretKey};
 
     #[test]
     fn nonce_from_slice() {

src/secp256k1.rs

@@ -224,12 +224,13 @@ impl Secp256k1 {
 
 #[cfg(test)]
 mod test {
-
     use std::rand;
     use std::rand::Rng;
-    use super::*;
     use key::PublicKey;
 
+    use super::Secp256k1;
+    use super::{InvalidPublicKey, IncorrectSignature, InvalidSignature};
+
     #[test]
     fn invalid_pubkey() {
         let s = Secp256k1::new();