Updated details of Arduino MKR1000

[animeshsrivastava24]

Added the details of PWM Pin and Frequency of operation. In response to Issue #587

[per1234]

Thanks for your contribution @animeshsrivastava24 I am going to request some changes:

Format as a table

We eventually need to document all the entire, ever-increasing list of Arduino boards here. In paragraph form, that will quickly become an impenetrable wall of text. The solution is to format this information as a table with the following columns:

• Board
• PWM pins
• PWM frequency

You can see an example of such a table here:
https://github.com/arduino/reference-en/blob/master/Language/Functions/Communication/Serial.adoc

The added PWM documentation applies to all MKR boards

The PWM pins are the same for all MKR boards so just call them MKR boards in that row of the table. No need to have a special row for each individual MKR board.

[animeshsrivastava24]

@per1234 Pardon me for inefficiency in Pull Requests, it's lately been since I tried using the Git Version directly from Websites rather than using the command line, I'll divert back to the command line tool. I tried resolving above suggestions.

[per1234]

@animeshsrivastava24 I prefer to use a Git client software on my computer combined with Git commands from the command line for the things that the Git client doesn't do, or doesn't do well. However, the more limited GitHub web interface should work well enough for contributions to this project if people prefer that. Certainly the GitHub web interface is the easiest to use for people without prior experience with Git.

[animeshsrivastava24]

@per1234 Thank you so much for the guidance. Also, I am eagerly waiting for your e-mail replies so that I can summarize and progress more for the Documentation and GSoD'19 Work, please guide.