More functionality with Cal and Find (#7)

* Add finding a file

* Fix typo

I did not mean to include the delete 😑

* Include a calendar

* Change the cal command to -3 arg

Display three months, instead of ```-w``` for week numbers

* ✂️ Get rid of advanced cal arguments

* 💫 Update formating and rearrange item orders

* ✨ Fix typo in showcal stop-tagline

readme.md

@@ -30,6 +30,9 @@ As a computer expert, we want to be more efficient and do our jobs better. We kn
 1. [remove a file](#removefile)
 1. [remove a folder](#removefolder)
 1. [list folder contents](#listfolder)
+1. [find a stale file](#findfile)
+1. [show a calendar](#showcal)
+
 
 ## <a id="copyfile"></a>copy a file
 
@@ -180,4 +183,24 @@ rm -r my_useless_folder
 ls -la my_folder
 ```
 
+## <a id="findfile"></a>find a stale file
+
+**STOP USING YOUR FILE EXPLORER TO FIND A FILE**
+
+Find all files modified more than 5 days ago
+
+```bash
+find my_folder -mtime +5
+```
+
+## <a id="showcal"></a>show a calendar
+
+**STOP LOOKING UP WHAT DAY IT IS BY CALENDAR WIDGETS**
+
+Display a text calendar, highlighting the current day
+
+```
+cal
+```
+
 _Remember, you can always google or `man` the commands you are not familiar with._