Update README.md

Just corrected a couple typos, no changes to meaning.
Merge pull request #22 from jackivan88/patch-1

Update README.md
Changed prepend date functionality to insert creation date *after* priority, if there is a priority. Closes Issue #23.
Merge branch 'develop' of https://github.com/mjdescy/TodoTxtMac into develop
Fixed bug (regression) related to the Issue #23 fix. The bug was that loading the file when the "prepend date on newly created tasks" option is set would prepend "(null)" to all tasks in the file.
Fixed bug that caused tasks to be duplicated when a file was reloaded while a filter is active. Closes Issue #24.
Merge branch 'feature/fix-filter-bug' into develop. Closes Issues #23 and #24.
Bumped version number to 1.1.6
Merge branch 'release/1.1.6'

Release 1.1.6

This release fixes two bugs, including a critical bug that can cause unwanted duplication of tasks (Issue #24).

Fixed:

Closes Issue #23: bug: Adding task with priority enters start date at wrong location.

Closes Issue #24: bug: Reload while filtered on context shows duplicate events.