Remove references to bel (#678)

Fixes example todo app

example/components/footer/clear-button.js

@@ -1,4 +1,4 @@
-var html = require('bel')
+var html = require('nanohtml')
 
 module.exports = deleteCompleted
 

example/components/footer/filter-button.js

@@ -1,4 +1,4 @@
-var html = require('bel')
+var html = require('nanohtml')
 
 module.exports = filterButton
 

example/components/footer/index.js

@@ -1,5 +1,5 @@
 var Component = require('../../../component')
-var html = require('bel')
+var html = require('nanohtml')
 
 var clearButton = require('./clear-button')
 var filterButton = require('./filter-button')

example/components/header.js

@@ -1,5 +1,5 @@
 var Component = require('../../component')
-var html = require('bel')
+var html = require('nanohtml')
 
 module.exports = class Header extends Component {
   constructor (name, state, emit) {

example/components/info.js

@@ -1,5 +1,5 @@
 var Component = require('../../component')
-var html = require('bel')
+var html = require('nanohtml')
 
 module.exports = class Info extends Component {
   update () {

example/components/todos/index.js

@@ -1,5 +1,5 @@
 var Component = require('../../../component')
-var html = require('bel')
+var html = require('nanohtml')
 
 var Todo = require('./todo')
 

example/components/todos/todo.js

@@ -1,4 +1,4 @@
-var html = require('bel')
+var html = require('nanohtml')
 
 module.exports = Todo