Updated readme.

README.md

@@ -9,12 +9,17 @@ the operating system responds with an out of space error.
 ## Supported Operating Systems
 - unix (macOS, linux, etc)
 
+## Contributions
+Contributions are welcome, if you have a procedure you want to implement or
+improve the tool please open an issue first to discuss it before submitting code.
+
 ## DISCLAIMER
 This utility does not provide a 100% guarantee to data erasure located in areas
 of the device marked as free space by the filesystem managing the device. This
-is a best effort at best and in the event that absolute data erasure is necessary
+is a best effort and in the event that absolute data erasure is necessary
 ensure that the device is encrypted before storing the sensitive data and destroy
-the device when decomissioning. This tool is more of a way to clean the free space
-on a device that is still going to remain operational and you need to perserve
-the content that is actually taking up space on the device. This utility has not
-been verified by security critics so use at your own disgression.
+the device when it is decommissioned. This tool is more of a way to clean the
+free space on a device that is still going to remain operational and you need to
+preserve the content that is actually taking up space on the device. This
+utility has not been verified by security critics / professionals so use at your
+own discretion.