added validation to product creation page, ran rake test
Modified Controller Test file to send assumed data to test against, checking if it works
Merge branch 'feature/iteration-b1' into develop

Finsihed Test Iteration-b1
Created new branch - feature/iteration-b2
changed testing validation - added parameters so product must not be empty and price must be positive
changed testing validation - added parameters so image URL must be .jpg, .png or .gif
Fixture Added - mock product added to products.yaml file for tests - syntax errors
More changes to test validation files

-added test parameters to products_test.rb to test if product has a unique title.
-Edited products.yml to fix syntax errors
-Ran rake test. 0 errors
Merge branch 'feature/iteration-b2' into develop

-Finished editing files ../test/models/products_test.rb and ../test/fixtures/products.yml
-Ran rake tests, 0 errors
-Done editing and setting up testing parameters
-Merge feature/iteration-b2