feat: extended connectors documentation (#69)

Signed-off-by: Lawrence Zawila <113581282+darkmatterpool@users.noreply.github.com>

Signed-off-by: Lawrence Zawila <113581282+darkmatterpool@users.noreply.github.com>

docs/connectors.md

@@ -0,0 +1,158 @@
+# Connectors
+
+## Currently supported connectors configs and typical default values
+
+- [BankingCircle](#bankingcircle)
+- [CurrencyCloud](#currencycloud)
+- [Modulr](#modulr)
+- [Stripe](#stripe)
+- [Wise](#wise)
+- [DummyPay](#dummypay)
+
+### BankingCircle
+
+Docs: [https://docs.bankingcircleconnect.com/](https://docs.bankingcircleconnect.com/)
+
+```golang
+    Username              string `json:"username" yaml:"username" bson:"username"`
+    Password              string `json:"password" yaml:"password" bson:"password"`
+    Endpoint              string `json:"endpoint" yaml:"endpoint" bson:"endpoint"`
+    AuthorizationEndpoint string `json:"authorizationEndpoint" yaml:"authorizationEndpoint" bson:"authorizationEndpoint"`
+```
+
+#### Sandbox defaults
+```json
+{
+    "username": "username",
+    "password": "password",
+    "endpoint": "https://sandbox.bankingcircle.com",
+    "authorizationEndpoint": "https://authorizationsandbox.bankingcircleconnect.com"
+}
+```
+
+#### Production defaults
+```json
+{
+    "username": "username",
+    "password": "password",
+    "endpoint": " https://www.bankingcircleconnect.com/",
+    "authorizationEndpoint": "https://authorization.bankingcircleconnect.com"
+}
+```
+
+### CurrencyCloud
+
+Docs: [https://www.currencycloud.com/developers/](https://www.currencycloud.com/developers/)
+
+```golang
+	LoginID       string   `json:"loginID" bson:"loginID"`
+	APIKey        string   `json:"apiKey" bson:"apiKey"`
+	Endpoint      string   `json:"endpoint" bson:"endpoint"`
+	PollingPeriod Duration `json:"pollingPeriod" bson:"pollingPeriod"`
+```
+
+#### Demo defaults
+```json
+{
+    "loginID": "loginID",
+    "apiKey": "apiKey",
+    "endpoint": "https://devapi.currencycloud.com",
+    "pollingPeriod": "1m"
+}
+```
+
+#### Production defaults
+```json
+{
+    "loginID": "loginID",
+    "apiKey": "apiKey",
+    "endpoint": "https://api.currencycloud.com",
+    "pollingPeriod": "1m"
+}
+```
+
+### Modulr
+
+Docs: [https://www.modulrfinance.com/modulr-api](https://www.modulrfinance.com/modulr-api)
+
+```golang
+    APIKey    string `json:"apiKey" bson:"apiKey"`
+    APISecret string `json:"apiSecret" bson:"apiSecret"`
+    Endpoint  string `json:"endpoint" bson:"endpoint"`
+```
+
+#### Sandbox defaults
+```json
+{
+    "apiKey": "apiKey",
+    "apiSecret": "apiSecret",
+    "endpoint": "https://api-sandbox.modulrfinance.com"
+}
+```
+
+#### Production defaults
+```json
+{
+    "apiKey": "apiKey",
+    "apiSecret": "apiSecret",
+    "endpoint": "https://api.modulrfinance.com"
+}
+```
+
+### Stripe
+
+Docs: [https://stripe.com/docs/development](https://stripe.com/docs/development)
+
+Sandbox/Production environment selection is controlled by api key and api secret types.
+
+```golang
+    PollingPeriod  connectors.Duration `json:"pollingPeriod" yaml:"pollingPeriod" bson:"pollingPeriod"`
+    APIKey         string              `json:"apiKey" yaml:"apiKey" bson:"apiKey"`
+    PageSize       uint64              `json:"pageSize" yaml:"pageSize" bson:"pageSize"`
+```
+
+#### Defaults
+```json
+{
+    "pollingPeriod": "1m",
+    "apiKey": "apiKey",
+    "pageSize": 100
+}
+```
+
+### Wise
+
+Docs: [https://api-docs.wise.com/](https://api-docs.wise.com/)
+
+Sandbox/Production environment selection is controlled by api key and api secret types.
+
+```golang
+    APIKey    string `json:"apiKey
+````
+
+#### Defaults
+```json
+{
+    "apiKey": "apiKey"
+}
+```
+
+### DummyPay
+
+This connector is used only for testing purposes. It does not connect to any real payment provider.
+
+```golang
+	Directory            string              `json:"directory" yaml:"directory" bson:"directory"`
+	FilePollingPeriod    connectors.Duration `json:"filePollingPeriod" yaml:"filePollingPeriod" bson:"filePollingPeriod"`
+	FileGenerationPeriod connectors.Duration `json:"fileGenerationPeriod" yaml:"fileGenerationPeriod" bson:"fileGenerationPeriod"`
+```
+
+#### Defaults
+```json
+{
+  "directory": "/tmp/payments",
+  "filePollingPeriod": "30s",
+  "fileGenerationPeriod": "10s"
+}
+```
+