fixed typos, wording

README.md

@@ -170,7 +170,7 @@ struct INSTR_TABLE[] {
   
   /* null-terminated string representation of an instruction ex: "mov"
    * subsequent instructions of the same name with a different operand
-   * encoding will be place contiguously with the first instance of the
+   * encoding will be placed contiguously with the first instance of the
    * instuction and will have the '\0' string
    */
   char instr_name[MAX_INSTR_LEN];

src/enums.h

@@ -185,13 +185,14 @@ typedef enum {
   xor
 } asm_instr;
 
-// used to catagorize instruction based on their functionality
+// used to categorize instruction based on their functionality
 typedef enum {
 
   // enforce a different mode of processing constant operand 
   DATA_TRANSFER,
   /* to ensure shift instruction such as "shr REG, 1" does not
-   * assemble the predefined constant 1 operand
+   * assemble the predefined constant 1 operand. Rather use the special 
+   * instruction  for shr REG, 1
    */
   SHIFT,  
   /* for control flow instructions constant operand is handled
@@ -202,7 +203,7 @@ typedef enum {
   OTHER
 } instr_type;
 
-// register bit size and catagory(ext denotes extended x64 registers)
+// register bit size and category (ext denotes extended x64 registers)
 typedef enum {
 
   reg8 = 0b00000000000,