doc: update

README.md

@@ -62,10 +62,10 @@ $scale: 0.5; // the scale of loading image in place holder
 ```html
 <ngx-progressive-image-loader>
  <ngx-image-placeholder>
- <img [attr.data-src]="'/assets/Avengers1.jpg'" alt="" ngxProgressiveImage>
+ <img [src]="'/assets/Avengers1.jpg'" alt="" ngxProgressiveImage>
  </ngx-image-placeholder>
  <ngx-image-placeholder>
- <img data-src="/assets/Avengers2.jpg" alt="" ngxProgressiveImage>
+ <img src="/assets/Avengers2.jpg" alt="" ngxProgressiveImage>
  </ngx-image-placeholder>
 </ngx-progressive-image-loader>
 ```
@@ -75,7 +75,7 @@ $scale: 0.5; // the scale of loading image in place holder
 ```html
 <ngx-progressive-image-loader>
  <ngx-image-placeholder>
- <img [attr.data-src]="'/assets/Avengers6.jpg'" [attr.data-srcset]="'/assets/Avengers6.jpg 800w,/assets/Avengers7.jpg 1366w'"
+ <img [src]="'/assets/Avengers6.jpg'" [srcset]="'/assets/Avengers6.jpg 800w,/assets/Avengers7.jpg 1366w'"
  size="(max-width: 1000px) 100vw, 100vw" ngxProgressiveImage>
  </ngx-image-placeholder>
 </ngx-progressive-image-loader>
@@ -87,9 +87,9 @@ $scale: 0.5; // the scale of loading image in place holder
 <ngx-progressive-image-loader>
  <ngx-image-placeholder>
  <picture ngxProgressiveImage>
- <source [attr.data-srcset]="'/assets/Avengers4.jpg'" media="(max-width: 1000px)">
- <source [attr.data-srcset]="'/assets/Avengers5.jpg'" media="(min-width: 1000px)">
- <img [attr.data-src]="'/assets/Avengers4.jpg'" alt="My default image">
+ <source [srcset]="'/assets/Avengers4.jpg'" media="(max-width: 1000px)">
+ <source [srcset]="'/assets/Avengers5.jpg'" media="(min-width: 1000px)">
+ <img [src]="'/assets/Avengers4.jpg'" alt="My default image">
  </picture>
  </ngx-image-placeholder>
 </ngx-progressive-image-loader>
@@ -119,6 +119,18 @@ $scale: 0.5; // the scale of loading image in place holder
 
 For `ngx-image-placeholder` directive, it takes
 
+- imageRatio
+
+- placeHolderImageSrc
+
+For `ngx-progressive-image-loader` directive, it takes
+
+- imageRatio
+
+- placeHolderImageSrc
+
+- filter / blurFilter
+
 ## Build project
 
 ```bat