message: add project/client list example
diff: # Example GraphQL queries
  +## List Projects and Clients
  +```
  +query whatIsThereAlready{
  + allProjects {
  + name
  + git_url
  + notifications {
  + ...slack
  + }
  + }
  + allOpenshifts {
  + name
  + id
  + }
  + allCustomers {
  + name
  + id
  + }
  +}
  +
  +fragment slack on NotificationSlack {
  + name
  +}
  +```
  +
  ## Add New Client and Project
  ```
  mutation {
  