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Update README.md (#251)

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Separate confusing sentences into multiple sentences. Remove meta-discourse. Remove informal contractions.
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Three7Six 2019-03-07 06:53:45 -08:00 committed by Tim Voronov
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![ferret](https://raw.githubusercontent.com/MontFerret/ferret/master/assets/intro.jpg)
## What is it?
```ferret``` is a web scraping system aiming to simplify data extraction from the web for such things like UI testing, machine learning and analytics.
Having its own declarative language, ```ferret``` abstracts away technical details and complexity of the underlying technologies, helping to focus on the data itself.
It's extremely portable, extensible and fast.
```ferret``` is a web scraping system. It aims to simplify data extraction from the web for UI testing, machine learning, analytics and more.
```ferret``` allows users to focus on the data. It abstracts away the technical details and complexity of underlying technologies using its own declarative language.
It is extremely portable, extensible and fast.
[Read the introductory blog post about Ferret here!](https://medium.com/@ziflex/say-hello-to-ferret-a-modern-web-scraping-tool-5c9cc85ba183)
## Show me some code
The following example demonstrates the use of dynamic pages.
First of all, we load the main Google Search page, type search criteria into an input box and then click a search button.
The click action triggers a redirect, so we wait till its end.
We load the main Google Search page, type search criteria into an input box and then click a search button.
The click action triggers a redirect, so we wait until its end.
Once the page gets loaded, we iterate over all elements in search results and assign the output to a variable.
The final for loop filters out empty elements that might be because of inaccurate use of selectors.