Typos in comments and log messages

Summary:
No code changes, no testing required.

alligned -> aligned
allignment -> alignment
completly -> completely
conseptually -> conceptually
decendents -> descendants
indefinetly -> indefinitely
dimention -> dimension
doesnt -> doesn't
safegaurd -> safeguard
intialization -> initialization
hierachy -> hierarchy
happend -> happened
gaurd -> guard
programatically -> programmatically
initalized -> initialized
immidiately -> immediately
occured -> occurred
unkown -> unknown
neccessary -> necessary
neccesarily -> necessarily
occuring -> occurring
comoponent -> component
propogate -> propagate
recieved -> received
referece -> reference
perfomance -> performance
recieving -> receiving
subsquently -> subsequently
scoll -> scroll
suprisingly -> surprisingly
targetting -> targeting
tranform -> transform
symetrical -> symmetrical
wtih -> with
Closes https://github.com/facebook/react-native/pull/17578

Differential Revision: D6718791

Pulled By: shergin

fbshipit-source-id: 4ab79c1131ec5971d35a0c7199eba7ec0a0918ad

Libraries/Experimental/Incremental.js

@@ -32,7 +32,7 @@ const DEBUG = false;
  *
  * `<Incremental>` solves this by slicing up rendering into chunks that are
  * spread across multiple event loops. Expensive components can be sliced up
- * recursively by wrapping pieces of them and their decendents in
+ * recursively by wrapping pieces of them and their descendants in
  * `<Incremental>` components. `<IncrementalGroup>` can be used to make sure
  * everything in the group is rendered recursively before calling `onDone` and
  * moving on to another sibling group (e.g. render one row at a time, even if
@@ -83,7 +83,7 @@ const DEBUG = false;
  */
 export type Props = {
  /**
-  * Called when all the decendents have finished rendering and mounting
+  * Called when all the descendants have finished rendering and mounting
   * recursively.
   */
  onDone?: () => void,

Libraries/Experimental/IncrementalPresenter.js

@@ -27,7 +27,7 @@ import type {Context} from 'Incremental';
  *
  * `<IncrementalPresenter>` can be used to group sets of `<Incremental>` renders
  * such that they are initially invisible and removed from layout until all
- * decendents have finished rendering, at which point they are drawn all at once
+ * descendants have finished rendering, at which point they are drawn all at once
  * so the UI doesn't jump around during the incremental rendering process.
  *
  * See Incremental.js for more info.

Libraries/Experimental/SwipeableRow/SwipeableFlatList.js

@@ -51,7 +51,7 @@ type State = {
  *
  * - It ensures that at most 1 row is swiped open (auto closes others)
  * - It can bounce the 1st row of the list so users know it's swipeable
- * - Increase performance on iOS by locking list swiping when row swiping is occuring
+ * - Increase performance on iOS by locking list swiping when row swiping is occurring
  * - More to come
  */
 

Libraries/Experimental/WindowedListView.js

@@ -392,7 +392,7 @@ class WindowedListView extends React.Component<Props, State> {
     }
     if (props.onEndReached) {
       // Make sure we call onEndReached exactly once every time we reach the
-      // end.  Resets if scoll back up and down again.
+      // end.  Resets if scroll back up and down again.
       const willBeAtTheEnd = lastRow === (totalRows - 1);
       if (willBeAtTheEnd && !this._hasCalledOnEndReached) {
         props.onEndReached();