README and Interfaces

Updated the IType interface and the README file that includes installation instructions and usage examples

src/interfaces/subType.ts

@@ -1,3 +1,3 @@
 export interface ISubType {
-  types: string[];
+  type: string;
 }

src/interfaces/superType.ts

@@ -1,3 +1,3 @@
 export interface ISuperType {
-  types: string[];
+  type: string;
 }

src/interfaces/type.ts

@@ -1,7 +1,3 @@
 export interface IType {
   type: string;
-  value: string;
-  
-  resource(): string;
-  all(): IType[];
 }