updates

Author: cbschuld

README.md

@@ -1,4 +1,9 @@
 # php-uuid-base58
+
+<p>
+    https://img.shields.io/travis/cbschuld/php-uuid-base58/master?style=flat-square
+</p>
+
 Generates a RFC4122 compliant v4 UUID and returns it encoded in base-58. This is great for creating unique IDs which only consume 22 characters of storage. Also provides base-58 encoding and decoding.
 
 ## Installation
@@ -34,8 +39,6 @@ npm run test
 
 There is an additional performance hit to translate a v4 UUID into base58.  In testing I found the overhead for the translation to base58 adds an additional 31%.  In 100k calculation batches I found that v4 uuid calculation took 1.606s/100k vs 2.319s/100k for uuid58.  Thus, 69% of the runtime was consumed calculating a v4 uuid.  Additional work could be done to bring the uuid calculation internal and attempt to increase performance.
 
-![performance graph](https://raw.githubusercontent.com/cbschuld/uuid-base58/master/__tests__/performance.png)
-
 ## Base58 Alphabet
 
 This solution uses the Bitcoin / IPFS hash alphabet: 123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz