Merge pull request #9 from pablo-rago/master

Sorting query-string params before signing authorization key.

Author: ppbustamante

.gitignore

@@ -26,4 +26,10 @@ local.properties
 # Locally stored "Eclipse launch configurations"
 *.launch
 
-.vscode
+.vscode
+
+######################
+# Intellij
+######################
+.idea/
+*.iml

src/main/java/com/cryptomarket/sdk/HttpClientImpl.java

@@ -89,7 +89,7 @@ public String get(String endpoint, @Nullable Map<String, String> params) throws
         URI uri = null;
         try {
             URIBuilder uriBuilder = new URIBuilder(this.url + this.apiVersion + endpoint);
-            if (params != null) params.forEach((key, val) -> uriBuilder.addParameter(key, val));
+            if (params != null) params.entrySet().stream().sorted(Map.Entry.comparingByKey()).forEach(e -> uriBuilder.addParameter(e.getKey(), e.getValue()));
             uri = uriBuilder.build();
         } catch (URISyntaxException e) {
             throw new CryptomarketSDKException("Failed to build the uri", e);