update readme

README.md

@@ -12,7 +12,44 @@ Notice: git submodules are used so make sure to clone this repository recursivel
 
 Generate an i2p private key
 
+#### Usage
+
+Make a DSA-SHA1 destination key
+
+    ./keygen privkey.dat
+
+Make an destination key with a certain key type
+
+    ./keygen privkey.dat <number>
+
+
+| key type             | number |
+| -------------------- | ------ |
+| DSA SHA1             | 0      |
+| ECDSA_SHA256_P256    | 1      |
+| ECDSA_SHA384_P384    | 2      |
+| ECDSA_SHA512_P521    | 3      |
+| RSA_SHA256_2048      | 4      |
+| RSA_SHA384_3072      | 5      |
+| RSA_SHA512_4096      | 6      |
+| EDDSA_SHA512_ED25519 | 7      |
+
+
 
 ### keyinfo
 
 Prints information about an i2p private key
+
+#### Usage
+
+Print just the b32 address for this key
+
+     ./keyinfo privatekey.dat
+
+... just the base64 address
+
+    ./keyinfo -d privatekey.dat
+
+Print all info about the public key
+
+    ./keyinfo -v privatekey.dat