file naming and section numbering

[tumregels]

@ericxiao251 I would like to suggest a few fixes. So here are they

1. The naming of the ipynb files can cause problems for gitbook.

• You should remove/change the brackets () from filenames. I fixed it by substituting with <> here. Gitbook fails to convert md into html when there are () in file name.
• Also remove ? from file name. This also causes gitbook to fail.

2. The section numbering should be adjusted.

For example for chapter 2 you have

• Chapter 2 - Exploring the Spark APIs
  • [Section 1.1 - Struct Types](Chapter 2 - Exploring the Spark APIs/Section 1.1 - Struct Types.md)
  • [Section 1.2 - Arrays and Lists](Chapter 2 - Exploring the Spark APIs/Section 1.2 - Arrays and Lists.md)
  • [Section 1.3 - Maps and Dictionaries](Chapter 2 - Exploring the Spark APIs/Section 1.3 - Maps and Dictionaries.md)

But it would be better to have

• Chapter 2 - Exploring the Spark APIs
  • [Section 2.1 - Struct Types](Chapter 2 - Exploring the Spark APIs/Section 2.1 - Struct Types.md)
  • [Section 2.2 - Arrays and Lists](Chapter 2 - Exploring the Spark APIs/Section 2.2 - Arrays and Lists.md)
  • [Section 2.3 - Maps and Dictionaries](Chapter 2 - Exploring the Spark APIs/Section 2.3 - Maps and Dictionaries.md)

3. Also spark-syntax/README.md file is a bit heavy + has numbering problem (chapter 3 has section 4.1 and 4.2).

[ericxiao251]

Fixed point 3!

For point 2, I see what you mean... Hmmm ya i have sub sections in the chapters, i'll see if i can fix the script for that :).

For point 1, noted, I'll update that as well!

[tumregels]

Great!

Also thanks for mentioning in the Acknowledgements section