Add form_example.py (#22)

The Nerodia equivalent Watirs example from http://watir.com/guides/form-example/

examples/form_example.py

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+# Based on http://watir.com/guides/form-example/
+
+from nerodia.browser import Browser
+from time import sleep  # needed to perform sleep
+from faker import Faker  # needed for fake form data
+import os  # needed for file path
+
+# Setup
+browser = Browser(browser='chrome')
+browser.window().maximize()
+
+# Navigate to the Page
+browser.goto('a.testaddressbook.com')
+
+# Authenticate and Navigate to the Form
+browser.link(id='sign-in').click()
+browser.text_field(data_test='email').set('watir_example@example.com')
+browser.text_field(data_test='password').set('password')
+browser.button(name='commit').click()
+browser.link(data_test='addresses').click()
+browser.link(data_test='create').click()
+
+# This uses the Faker Library to give us Random Data.
+# Read more about Faker Library here: https://pypi.org/project/Faker/
+
+fake = Faker()  # So we can use fake.name() instead of Faker().name()
+browser.text_field(id='address_first_name').set(fake.first_name())
+browser.text_field(id='address_last_name').set(fake.last_name())
+browser.text_field(id='address_street_address').set(fake.street_address())
+browser.text_field(id='address_secondary_address').set(fake.secondary_address())
+browser.text_field(id='address_city').set(fake.city())
+
+# Select list elements can select by either `text` or `value`
+browser.select_list(id='address_state').select(fake.state())
+
+browser.text_field(id='address_zip_code').set(fake.postcode())
+
+# Radio buttons can be selected with `text` or `label` locators
+browser.radio(text='Canada').set()
+
+# Date Field elements accept Date objects
+birthday = fake.date_of_birth()
+browser.date_field(id='address_birthday').set(birthday)
+
+age = fake.date_time_this_year().year - birthday.year
+browser.text_field(id='address_age').set(age)
+
+browser.text_field(id='address_website').set(fake.url())
+
+# File Field elements upload file with the '#set' method, but require the full system path
+file_name = 'nerodia_example.txt'
+file = open(file_name, 'w+').close()
+path = os.path.realpath(file_name)
+browser.file_field(id='address_picture').set(path)
+
+# Checkboxes can be selected by 'label' or 'text' locators
+browser.checkbox(label='Dancing').set()
+browser.checkbox(name='address[interest_climb]').set()
+
+browser.textarea(id='address_note').set('See, filling out a form with Nerodia is as easy as with Watir!')
+browser.button(data_test='submit').click()
+
+sleep(3)
+
+browser.quit()