Addressed editorial changes from issue 389
Revert "Addressed editorial changes from issue 389"

This reverts commit 623684d1299d16bc72c61ea6ce8d52a1b374133c.
Addressed issue 390

Made some editorial changes to improve general readability.
Changed references to mouse to pointing device.
Merge pull request #7 from halindrome/p-390

Changes to address readability as per issue 390