Updated bits readme

Author: rampatra

src/main/java/com/ctci/treesandgraphs/GraphNode.java

@@ -0,0 +1,8 @@
+package com.ctci.treesandgraphs;
+
+/**
+ * @author rampatra
+ * @since 2019-03-21
+ */
+public class GraphNode {
+}

src/main/java/com/ctci/treesandgraphs/RouteBetweenNodes.java

@@ -0,0 +1,8 @@
+package com.ctci.treesandgraphs;
+
+/**
+ * @author rampatra
+ * @since 2019-03-21
+ */
+public class RouteBetweenNodes {
+}

src/main/java/com/rampatra/bits/README.md

@@ -2,45 +2,63 @@
 
 ### Basic Operators
 
-AND:   
-| x | y | x & y |    
------------------  
-| 0 | 0 | 0     |  
-| 0 | 1 | 0     |  
-| 1 | 0 | 0     |  
-| 1 | 1 | 1     |  
-
-OR:  
-| x | y | x | y |    
------------------  
-| 0 | 0 | 0     |  
-| 0 | 1 | 1     |  
-| 1 | 0 | 1     |  
-| 1 | 1 | 1     |
-
-XOR:  
-| x | y | x ^ y |    
------------------  
-| 0 | 0 | 0     |  
-| 0 | 1 | 1     |  
-| 1 | 0 | 1     |  
-| 1 | 1 | 0     |
+**AND:**   
+
+| x | y | x `&` y |
+----|---|---------|
+| 0 | 0 | 0       |
+| 0 | 1 | 0       |
+| 1 | 0 | 0       |
+| 1 | 1 | 1       | 
+
+**OR:**
+  
+| x | y | x `|` y |
+|---|---|---------|
+| 0 | 0 | 0       |
+| 0 | 1 | 1       |
+| 1 | 0 | 1       |
+| 1 | 1 | 1       |
+
+**XOR:**
+
+| x | y | x `^` y |
+|---|---|---------|
+| 0 | 0 | 0       |
+| 0 | 1 | 1       |
+| 1 | 0 | 1       |
+| 1 | 1 | 0       |
 
 
 ### Shifts
 
-1. Left Shift (<<):
+#### 1. Left Shift (<<):
+
+1 << 3 = 8
+
+> 00000001 << 3 = 00001000 (only showing 8 bits)
+
+### 2. Right Shift:
+
+**Two types:**
+
+**a. Signed Right Shift (>>):**
+
+64 >> 2 = 16
+
+> 001000000 >> 2 = 00010000
+
+-64 >> 2 = -16
+
+    111000000 >> 2 = 11110000 
+
+**b. Unsigned Right Shift (>>>):**
 
-    1 << 3 = 8
+64 >>> 2 = 16
 
-    00000001 << 3 = 00001000 (only showing 8 bits)
+    001000000 >>> 2 = 00010000
 
-2. Right Shift:
+-64 >>> 2 = 
 
-    Two types:
-    
-        a. Signed Right Shift (>>):
-        
-        b. Unsigned Right Shift (>>>):    
-        
+    111000000 >>> 2 = 00010000