Update the readme and fix some typos

Author: dreampiggy

README.md

@@ -22,15 +22,15 @@ User who use SVGKit or have to support iOS 8+(macOS 10.10+) can still use that S
 
 ## Note for CoreSVG framework
 
-So far (Xcode 11.4 && iOS 13.4), the CoreSVG.framework is still in private framework. I've already send the feedback radar to ask for the public for this framework. If you want, please help us as well to fire radars as well: https://feedbackassistant.apple.com/
+So far (Xcode 11.4 && iOS 13.4), the CoreSVG.framework is still in private framework. I've already send the feedback radar to ask for the public for this framework. If you want, please help us to fire radars and request to Apple as well: https://feedbackassistant.apple.com/
 
 The CoreSVG.framework API is stable and match the same concept as CoreGraphics's PDF API, so it's no reason to keep private. And we've already submitted Apps which use the CoreSVG to render the vector images on App Store.
 
 All the SPI access here we use the runtime access and early check, even if future OS upgrade break the function, this framework will not crash your App and just load failed. I'll keep update to the latest changes for each firmware update.
 
 If you still worry about the SPI usage, you can use [SDWebImageSVGKitPlugin](https://github.com/SDWebImage/SDWebImageSVGKitPlugin). But we may not response to any parser or rendering issue related to [SVGKit](https://github.com/SVGKit/SVGKit), because it's already no longer maintained.
 
-There is also another solution: [SVG-Native](https://w3c.github.io/svgwg/specs/svg-native/index.html), a new W3C standard from Adobe, which is a subset of SVG/1.1. Both Apple/Google/Microsoft already join the agreement for this standard, you can try to write your own coder with the [code from SVG-native-viewer](https://github.com/adobe/svg-native-viewer/blob/master/svgnative/example/testCocoaCG/SVGNSView.mm) and adopt SVG-native for vector images.
+There is also another solution: [SVG-Native](https://w3c.github.io/svgwg/specs/svg-native/index.html), a new W3C standard from Adobe, which is a subset of SVG/1.1. Both Apple/Google/Microsoft already join the agreement for this standard, you can try to write your own coder using code from [SVG-native-viewer](https://github.com/adobe/svg-native-viewer/blob/master/svgnative/example/testCocoaCG/SVGNSView.mm) and adopt SVG-native for vector images.
 
 ## Example
 
@@ -124,7 +124,7 @@ In most cases, vector SVG is preferred. But however, sometimes you may want the
 
 By default it use the SVG viewBox size. You can also specify a desired size during image loading using `.imageThumbnailPixelSize` context option. And you can specify whether or not to keep aspect ratio during scale using `.imagePreserveAspectRatio` context option.
 
-Note: Once you pass the pixel size, we will always generate the bitmap representation even on iOS/tvOS 11+. If you want the vector format, do not pass them, let `UIImageView` to dynamically stretch the SVG.
+Note: Once you pass the `imageThumbnailPixelSize`, we will always generate the bitmap representation. If you do want the vector format, do not pass them, let `UIImageView` to dynamically stretch the SVG.
 
 + Objective-C
 
@@ -170,7 +170,7 @@ if svgImage.sd_isVector { // This API available in SDWebImage 5.6.0
 
 1. The CSS `color` does not support hex syntax. Use `rgb` or `rgba` instead
     ```html
-    <path  d="M399.8,68.2c77.3,3.1,160.6,32.1" fill=rgb(255,255,255) />
+    <path  d="M399.8,68.2c77.3,3.1,160.6,32.1" fill="rgb(255,255,255)" />
     ```
 
 ## Backward Deployment