Update README.md

cryptography/caesar-cipher/README.md

@@ -2,30 +2,32 @@
 
 The [Caesar Cipher](http:https://en.wikipedia.org/wiki/Caesar_cipher) is a very simple and common encryption method which does not appear often in full-fledged CTFs but is a good basis for cryptography.
 
-A Caesar Cipher is the shift of a string of letters a certain number of positions down the alphabet.
+A Caesar Cipher is the shift of a string of letters a certain number of positions up or down the alphabet.
 
 ###Example
 
 Let's say we want to encrypt the string `hello world` to give to our right-handed friend whose favorite number is 3. We will shift our string **left 3**.
 
-Taking the first letter `h`, going 3 places up the alphabet(as it is a left shift)  we reach the letter `e`, and so replace it in our string.
+Taking the first letter `h` in our string and going 3 places up the alphabet(as it is a left shift) gives us the letter `e`. We then start our new, encrypted string with the letter.
 
-Doing so for the whole string creates a jumbled mess of incomprehensible letters unless the reader has the propper decryption shift:
+Doing so for the whole original string creates a jumbled mess of incomprehensible letters to anyone but the reader with the proper decryption shift:
 
-Original: `hello world`
-Final: `ebiil tloia`
+**Original:** `hello world`
+
+**Final:** `ebiil tloia`
 
 To give this to our friend, we would send him the final string with the instructions **right 3**, and either by hand, with a website, or with a script, he would be able to extract our extremely important message.
 
 ##Detection
 
-Caesar ciphers are usually presented as very low-point tasks, and can be easy to detect and check for. Strings containing only letters which seem incomprehensibly jumbled can be Caesar ciphers and should be checked.
+Caesar ciphers are usually presented in very low-point tasks, if at all, and can be easy to detect and check for. Strings containing incomprehensibly jumbled letters can very likely be Caesar ciphers and should be checked.
 
 ##Solution
 
-There are many approaches to cracking Caesar ciphers, but most commonly the best way to solve them is to write a script or run the string through a website (Options presented below) which will print out all the possible shifts of a string. At that point the most comprehensible and logical solution can be printed.
+There are many approaches to cracking Caesar ciphers, but most commonly the best way to solve them is to write a script or run the string through a website (Options presented below) which will print out all the possible shifts of a string. At that point the most comprehensible and logical solution can be chosen.
 
 ##Sources/See More
 
 [Wikipedia and Caesar Ciphers](http:https://en.wikipedia.org/wiki/Caesar_cipher)
+
 [Quick and Simple Decryption Tool](http:https://www.xarg.org/tools/caesar-cipher)