Slow startup time

[Jameskmonger]

I did some profiling to see which require calls were taking the longest

twotime:index.js -> 305ms for inquirer
twotime:index.js -> 3ms for commander
    twotime:api-provider.js -> 25ms for configstore
                harvest:client.js -> 6ms for async
                    request-promise:rp.js -> 99ms for bluebird
                    request-promise:rp.js -> 10ms for request-promise-core/configure/request2
                    request-promise:rp.js -> 3ms for stealthy-require
                    request-promise:rp.js -> 14ms for tough-cookie
                    request-promise:rp.js -> 212ms for request
                harvest:client.js -> 356ms for request-promise
            harvest:index.js -> 362ms for client
            harvest:index.js -> 0ms for api/clients
            harvest:index.js -> 1ms for api/company
            harvest:index.js -> 1ms for api/contacts
            harvest:index.js -> 1ms for api/estimateItemCategories
            harvest:index.js -> 1ms for api/estimateMessages
            harvest:index.js -> 1ms for api/estimates
            harvest:index.js -> 1ms for api/expenseCategories
            harvest:index.js -> 0ms for api/expenses
            harvest:index.js -> 1ms for api/invoiceItemCategories
            harvest:index.js -> 0ms for api/invoiceMessages
            harvest:index.js -> 2ms for api/invoicePayments
            harvest:index.js -> 1ms for api/invoices
            harvest:index.js -> 1ms for api/projectAssignments
            harvest:index.js -> 1ms for api/projects
            harvest:index.js -> 1ms for api/roles
            harvest:index.js -> 2ms for api/taskAssignments
            harvest:index.js -> 1ms for api/tasks
            harvest:index.js -> 1ms for api/timeEntries
            harvest:index.js -> 1ms for api/userAssignments
            harvest:index.js -> 0ms for api/users
        twotime:harvest/api.js -> 390ms for harvest
        twotime:harvest/api.js -> 81ms for parse-notes
    twotime:api-provider.js -> 473ms for harvest/api
    twotime:api-provider.js -> 19ms for targetprocess-rest-api
twotime:index.js -> 559ms for api-provider

Each log is from after the require call, logging how long it took

[Jameskmonger]

cc @davidgruar