Added public APIs from apilayer.com

README.md

@@ -39,6 +39,13 @@ A collective list of JSON APIs for use in web development.
 | Hipster Ipsum | Generates Hipster Ipsum text | No | [Go!] (http://hipsterjesus.com/)
 | Loripsum | The "lorem ipsum" generator that doesn't suck | No | [Go!] (http://loripsum.net/)
 
+### Documents & Productivity
+
+| API | Description | OAuth |Link |
+|---|---|---|---|
+| pdflayer API | HTML/URL to PDF | No | [Go!](https://pdflayer.com) |
+
+
 ### Drinks
 
 | API | Description | OAuth |Link |
@@ -57,6 +64,16 @@ A collective list of JSON APIs for use in web development.
 | Yelp | Find Local Business | Yes |[Go!](https://www.yelp.com/developers) |
 | Quandl API | Stock Market Data | No |[Go!](https://www.quandl.com/) |
 
+### Data Validation
+
+| API | Description | OAuth |Link |
+|---|---|---|---|
+| vatlayer API | VAT number validation | No | [Go!](https://vatlayer.com) |
+| numverify API | Phone number validation | No | [Go!](https://numverify.com) |
+| mailboxlayer API | Email address validation | No | [Go!](https://mailboxlayer.com) |
+| languagelayer API | Language detection | No | [Go!](https://languagelayer.com) |
+
+
 ### Exchange
 
 | API | Description | OAuth |Link |
@@ -84,6 +101,8 @@ A collective list of JSON APIs for use in web development.
 
 | API | Description | OAuth |Link |
 |---|---|---|---|
+| screenshotlayer API | URL 2 Image | No | [Go!](https://screenshotlayer.com) |
+| giflayer API | Video 2 GIF | No | [Go!](https://giflayer.com) |
 | Noun Project | Icons | Yes | [Go!](http://api.thenounproject.com/index.html) |
 | Unsplash | Photography | Yes | [Go!](https://unsplash.com/developers) |
 | Giphy | Get all your gifs | No | [Go!](https://github.com/Giphy/GiphyAPI) |