Read text from stdin

[happyRip]

I added functionality to enable piping text into typer instead of having to rely on babble or an input file, as specified in #2

I also changed default -c and -p flags functionality to work more intuitively.

[maaslalani]

Thank you for the changes! I really appreciate the stdin functionality, it's awesome! (Maybe we should add some docs in the README.md about it).

For the flag changes, I'm not so sure the changes are intuitive, could you explain it to me? monkeytype.com and keybr.com both start off with all lowercase and no punctuation for their typing tests so I think typer should do the same. Then, if people want punctuation or capitalization they can opt-in.

[happyRip]

For the flag changes, I'm not so sure the changes are intuitive, could you explain it to me?

Since we are using stdin now it seems strange to me that by just using typer without any flags input from stdin is stripped from any punctuation and swapped to lowercase, when it could be intended that way. I thought that input to the program should be consicered as user intended it to be.

[maaslalani]

For the flag changes, I'm not so sure the changes are intuitive, could you explain it to me?

Since we are using stdin now it seems strange to me that by just using typer without any flags input from stdin is stripped from any punctuation and swapped to lowercase, when it could be intended that way. I thought that input to the program should be considered as user intended it to be.

I think it's okay to filter the input in this case (for a typing test) since the user will probably use stdin to curl text from the web and cat files, etc... so it still makes sense for typer to use this input and remove punctuation and capitalization. If the user wants unchanged input then they can use the -cp flags. Currently it works this way for files as well with the -f flags. If users complain, then we can change this to your suggested solution, but I'd lean to keeping it as it currently is for now.

[happyRip]

Then the changes can be merged without commit e351378

[maaslalani]

Merged in #15