Update README.md

-Some proper English changes.

Line 206 - * prevent recording audio (including from the microphone) - isn't this a little redundant? How other than the microphone would the audio be recorded?

Line 308 - * You cannot restrict the Android ID for XPrivacy because it is used for submitting restrictions (only [pro version](http://www.xprivacy.eu/)) I thought anyone can submit restrictions?

Line 339 - * Custom recovery ([CWM](http://forum.xda-developers.com/wiki/ClockworkMod_Recovery), [TWRP](http://teamw.in/project/twrp2) or similar) A little of topic here, but why is this needed? If a phone is already rooted with XPosed installed, the recovery should not matter

Line 427 - If desired, you can even restrict XPrivacy from accessing any of the above. - This contradicts the Limitations section.

Line 693 - You can restrict the IP and MAC addresses and IMEI number for any application. - This contradicts Line 307

Line 709 - * Prompts will not be shown for dangerous functions unless *Restrict dangerous functions* is enabled - Did this not change in version 1.99.69? Same with Line 717

Line 719-721 - Did this also not change in a recent version? I thought if the onDemand is not answered, the restriction check mark settings will be implemented.
Merge pull request #1511 from an0n981/patch-3

Update README.md