Removed src from files: decrease published version size

[coderaiser]

Added .npmignore

[Tyriar]

The src/ files are there on purpose so the source map files resolve correctly. If size is this much of a problem in your application it's probably safe to do a clean up step before you bundle by deleting node_modules/node-pty/**/*.ts and node_modules/node-pty/**/*.js.map

[coderaiser]

So you just want only these files was ignored in #198?

./node_modules/node-pty/src/windowsPtyAgent.test.ts
./node_modules/node-pty/src/terminal.test.ts
./node_modules/node-pty/src/windowsTerminal.test.ts
./node_modules/node-pty/src/unixTerminal.test.ts

[Tyriar]

@coderaiser yep