Issue with publishing to npm

So I am trying to build an Open Source project using react and pushing it to npm. The issue is, my components, while they work great on a test environment - mounted to other components but when I publish it to npm and download the package and try to access it, it gives me an error.

Here is a small sample of the code

import React, {Component} from 'react';
import {Nav, NavBar, NavLink, NavItem} from 'react-bootstrap';


class GitNav extends Component{
    handleSelect(eventKey){
      window.location = this.props.NavURLs[eventKey];
    }
  render(props){
    const NavTextItems = this.props.NavTexts.map((eachNav, key) =>
      <NavItem eventKey={key} href="#">{eachNav}</NavItem>
      );
    return(
      <Navbar fixedBottom collapseOnSelect>
          <Navbar.Header>
            <Navbar.Toggle />
          </Navbar.Header>
            <Navbar.Collapse>
              <Nav onSelect={this.handleSelect.bind(this)}>
                {NavTextItems}
              </Nav>
            </Navbar.Collapse>
          </Navbar>
    );
  }
}

export default GitNav;

Here is the error:

Error in ./~/react-github-nav/index.js
Module parse failed: /Users/theawesomeguy/Desktop/Projects/resume3/resume/node_modules/react-github-nav/index.js Unexpected token (11:6)
You may need an appropriate loader to handle this file type.
SyntaxError: Unexpected token (11:6)
 @ ./src/App.js 20:22-49

If anyone can help me out with this, that will be great. Thanks in advance!