Update FormBuilder.php

[ADD] Method reset()
[ADD] Method image()
Update FormBuilder.php
Update FormBuilder.php

[REPLACE] URL::asset($url) by $this->url->asset($url)
Changed environment config from array_merge() to array_replace_recursive()
Fix Cache::get()/Cache::section()->get() for empty-like values that are not null
Removed the pagination class from around the pager class.

The official twitter bootstrap pager example is not wrapped with the pagination class.
Fix Travis CI build errors

Composer uses the GitHub API to download packages, but the API is
rate-limited so repeated builds from the same IP hit the limit. This
adds --prefer-source to download from source, which is slower but more
reliable. It also adds --no-interaction to avoid hanging in case a
similar issue should arise in the future.

Reference:
https://github.com/composer/composer/issues/1314
Merge pull request #1229 from davejamesmiller/fix-travis-ci

Fix Travis CI build errors
Support join statements in updates. Closes #1228.
Merge pull request #1225 from ChuckHeintzelman/bug/environ-config-not-merging-recursively

Changed environment config loading from array_merge() to array_replace_recursive()
Refactoring a little code.
Merge pull request #1226 from nikkobautista/bugfix/cache-get

Fix Cache::get()/Cache::section()->get() for empty-like values that are not null
Fix spacing.
Add has method to section. Closes #1224.
Merge pull request #1227 from Tuurbo/bugfix/pagination

Removed the pagination class from around the pager class.
Refactoring some session stuff. Allowing dot notation to access session arrays. Closes #1214.
Updated readme.
Merge pull request #1220 from thujohn/master

Add back Form::reset and Form::image methods
Removing code sample.