diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..208d3e1
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 El Zubeir Huweidi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/lexer/lexer.go b/lexer/lexer.go
index 49cab27..6ca1bd5 100644
--- a/lexer/lexer.go
+++ b/lexer/lexer.go
@@ -8,7 +8,7 @@ type Lexer struct {
 	input        string
 	position     int  // current position in input (points to current char)
 	readPosition int  // current reasing position in input (after current char)
-	ch           byte //current char under examination
+	ch           byte // current char under examination
 }
 
 func New(input string) *Lexer {
@@ -60,6 +60,7 @@ func (l *Lexer) skipWhitespace() {
 func newToken(tokenType token.TokenType, ch byte) token.Token {
 	return token.Token{Type: tokenType, Literal: string(ch)}
 }
+
 func (l *Lexer) peekChar() byte {
 	if l.readPosition >= len(l.input) {
 		return 0