Update README.md [ci skip]

PolyMathOrg · Apr 16, 2019 · df5524e · df5524e
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@@ -11,12 +11,6 @@ DataFrame is a tabular data structure for data analysis in [Pharo](https://pharo
 
 <img width="700" src="img/weatherDf.png">
 
-## What are data frames?
-
-Data frames are the one of the essential parts of the data science toolkit. They are the specialized data structures for tabular data sets that provide us with a simple and powerful API for summarizing, cleaning, and manipulating a wealth of data sources that are currently cumbersome to use.
-
-A data frame is like a database inside a variable. It is an object which can be created, modified, copied, serialized, debugged, inspected, and garbage collected. It allows you to communicate with your data quickly and effortlessly, using just a few lines of code. DataFrame project is similar to [pandas](https://pandas.pydata.org/) library in Python or built-in [data.frame](https://www.rdocumentation.org/packages/base/versions/3.5.3/topics/data.frame) class in R.
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 ## Installation
 To install DataFrame, go to the Playground (`Ctrl+OW`) in your fresh Pharo image and execute the following Metacello script (select it and press Do-it button or `Ctrl+D`):
 
@@ -27,6 +21,12 @@ Metacello new
   load.
 ```
 
+## What are data frames?
+
+Data frames are the one of the essential parts of the data science toolkit. They are the specialized data structures for tabular data sets that provide us with a simple and powerful API for summarizing, cleaning, and manipulating a wealth of data sources that are currently cumbersome to use.
+
+A data frame is like a database inside a variable. It is an object which can be created, modified, copied, serialized, debugged, inspected, and garbage collected. It allows you to communicate with your data quickly and effortlessly, using just a few lines of code. DataFrame project is similar to [pandas](https://pandas.pydata.org/) library in Python or built-in [data.frame](https://www.rdocumentation.org/packages/base/versions/3.5.3/topics/data.frame) class in R.
+
 ## Very simple example
 
 In this section I show a very simple example of creating and manipulating a little data frame. For more advanced examples, please check the [DataFrame Booklet](#dataframe-booklet).