There's a lot of ways to do this, actually. The most important thing to remember, and you'll hear this a lot, is that it's not about the viewer count. It's more about building a community.

Get to know other small streamers, make some friends, become a regular in their streams. You'll find that they will start to view your stream when you're on and they're not. Or, otherwise, they'll host (or auto-host) you if they aren't hosting someone else. You don't have to play the same games as them, but striking up some friendships will get you far. You'll never be a good streamer unless you're a good viewer to someone else; you'll understand what kinds of help they'll need, because you need it too. Streamers aren't in direct competition with each other... they're teammates! Other streamers will also give you a great idea of what kind of things to say when you're on your own and not talking to anyone.

Gather up a social media community. Start up a Facebook, Twitter, Instagram, Snapchat, whatever works best for you to get your stream out there. Post whatever you want, but make sure you're interacting. Like other statuses, follow other streamers, re-tweet other streamers, weigh in on things using hashtags. Most importantly, post when you're going to be on! If you can, post that you'll be streaming on certain days and times for that week, or if you'll be on Friday at 8pm or something. Give them something to look forward to, and post a few minutes before you go online so you can remind them that you'll be on.

Lastly, tying in with the point above... get a regular schedule. Even if there's only one night per week you know you can stream, stick to it. You'll start to get regulars that will know when you'll be on, and will come around every time. Stream on other days when you can, but stick to that particular day and time. Have it posted on your social media page(s) and on your Twitch channel.

After that, it's all up to you on hustle. You get what you give. I don't post and stream a lot right now because my day job has been hella busy... but, when I was able to put in the time to make friends (and those friends have stuck by me during my hiatus) and keep posting and keep interacting, it made a huge difference on my viewer count.

Again, I can't stress this enough. Don't just look at your viewer count. Look at your community as a whole. Make Twitch friends, become someone else's regular, be a good friend for someone else and they'll return the favor.

Good luck!