bring in travis (#4)

Author: AnshulMalik

.travis.yml

@@ -0,0 +1,9 @@
+language: rust
+
+before_script:
+  - rustup component add rustfmt-preview
+script:
+  - cargo fmt --all -- --check
+  - cargo build
+  - cargo test
+  

src/searching/mod.rs

@@ -1,7 +1,8 @@
 use std::cmp;
 
 pub fn binary_search<T>(item: T, arr: &[T]) -> i32
-    where T: cmp::PartialEq + cmp::PartialOrd + Sized
+where
+    T: cmp::PartialEq + cmp::PartialOrd + Sized,
 {
     let mut left = 0;
     let mut right = arr.len() - 1;
@@ -27,7 +28,8 @@ pub fn binary_search<T>(item: T, arr: &[T]) -> i32
 }
 
 pub fn linear_search<T>(item: T, arr: &[T]) -> i32
-    where T: cmp::PartialEq
+where
+    T: cmp::PartialEq,
 {
     let length = arr.len();
 
@@ -63,4 +65,4 @@ mod tests {
         index = searching::linear_search(5, &vec![1, 2, 3, 4]);
         assert_eq!(index, -1);
     }
-}
+}