(docs): Fix typo in README camera usage description (#1046)

README.md

@@ -7,7 +7,7 @@ The comprehensive camera module for React Native. Including photographs, videos,
 - Pull Requests are welcome, if you open a pull request we will do our best to get to it in a timely manner
 - Pull Request Reviews and even more welcome! we need help testing, reviewing, and updating open PRs
 - If you are interested in contributing more actively, please contact me (same username on Twitter, Facebook, etc.) Thanks!
-- We are now on [Open Collective](https://opencollective.com/react-native-camera#sponsor)! Contributions are appreciated and will be used to fund core contributors. [more details](#open-collective) 
+- We are now on [Open Collective](https://opencollective.com/react-native-camera#sponsor)! Contributions are appreciated and will be used to fund core contributors. [more details](#open-collective)
 
 #### Breaking Changes
 ##### android build tools has been bumped to 25.0.2, please update (can be done via android cli or AndroidStudio)
@@ -45,7 +45,7 @@ To enable `video recording` feature you have to add the following code to the `A
 
 <!-- Include this only if you are planning to use the microphone for video recording -->
 <key>NSMicrophoneUsageDescription</key>
-<string>Your message to user when the microsphone is accessed for the first time</string>
+<string>Your message to user when the microphone is accessed for the first time</string>
 ```
 3. On Android, you require `buildToolsVersion` of `25.0.2+`. _This should easily and automatically be downloaded by Android Studio's SDK Manager._
 
@@ -140,7 +140,7 @@ class BadInstagramCloneApp extends Component {
       </View>
     );
   }
-  
+
   onBarCodeRead(e) {
     console.log(
         "Barcode Found!",
@@ -332,8 +332,8 @@ If set to `true`, the image returned will be mirrored.
 If set to `true`, the image returned will be rotated to the _right way up_.  WARNING: It uses a significant amount of memory and my cause your application to crash if the device cannot provide enough RAM to perform the rotation.
 
 (_If you find that you need to use this option because your images are incorrectly oriented by default,
-could please submit a PR and include the make model of the device.  We believe that it's not 
-required functionality any more and would like to remove it._) 
+could please submit a PR and include the make model of the device.  We believe that it's not
+required functionality any more and would like to remove it._)
 
 ## Component instance methods