Added missing fonts

Author: rougier

book.css

@@ -1,3 +1,11 @@
+@font-face{
+    font-family: 'Source Code Pro';
+    font-weight: 100;
+    font-style: normal;
+    font-stretch: normal;
+    src: url('fonts/SourceCodePro-Light.otf.woff') format('woff');
+}
+
 @font-face{
     font-family: 'Source Code Pro';
     font-weight: 400;
@@ -7,11 +15,11 @@
 }
 
 @font-face{
-    font-family: 'Source Code Pro';
+    font-family: 'Source Sans Pro';
     font-weight: 100;
     font-style: normal;
     font-stretch: normal;
-    src: url('fonts/SourceCodePro-Light.otf.woff') format('woff');
+    src: url('fonts/SourceSansPro-Light.otf.woff') format('woff');
 }
 
 @font-face{
@@ -24,18 +32,18 @@
 
 @font-face{
     font-family: 'Source Sans Pro';
-    font-weight: 400;
+    font-weight: 100;
     font-style: italic;
     font-stretch: normal;
-    src: url('fonts/SourceSansPro-It.otf.woff') format('woff');
+    src: url('fonts/SourceSansPro-LightIt.otf.woff') format('woff');
 }
 
 @font-face{
     font-family: 'Source Sans Pro';
-    font-weight: 100;
+    font-weight: 400;
     font-style: italic;
     font-stretch: normal;
-    src: url('fonts/SourceSansPro-LightIt.otf.woff') format('woff');
+    src: url('fonts/SourceSansPro-It.otf.woff') format('woff');
 }
 
 html {