scaffold microposts
update user and microposts spec:
microposts: user:belongs_to
user: microposts:has_many
microposts: user:belongs_to user: microposts:has_many
add micropost default order spec
add micropost default order scope
fix typo
has_many :microposts, dependent: :destroy
add content validation spec
add content validation rules
add microposts on profile page spec
fix typo in spec, to prevent lazy evaluation
add micropost on profile page
fake microposts
add styling for microposts
add routing for microposts
add access control spec for microposts controller
move signed_in_user to sessions_helper
add microposts controller stub
fix typo
add micropost page integration test
add micropost form
fix typo in class
add status spec