docs: write more documentation

src/lib.rs

@@ -1,3 +1,23 @@
+//! Abstraction and APIs for matrix operations
+//!
+//! Includes handy utilities such as:
+//! - Transpose of matrix
+//! - Determinant of any N-by-N matrix
+//! - Matrix mathematics
+//! - TODO:: Inverse matrix
+//! - TODO:: Transformation of vectors using matrices
+//!
+//! Examples:
+//! ```
+//! ...
+//! use matrix::Matrix;
+//! let m = Matrix::from_str("1,2,3\n4,5,6\n7,8,9");
+//! println!("Matrix string formatting:\n{}", m);
+//! println!("Evaluate determinant of matrix: {}", m.determinant());
+//! println!("Transpose of matrix m:\n{}", m.transpose());
+//! ...
+//! ```
+
 pub mod types;
 
 #[cfg(test)]