Update README.md

Author: pzaffino

PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/README.md

@@ -40,12 +40,18 @@ Since, we want to make it usable from the 3D Slicer users in a simple and effici
 
 Automatic segmentation example:
 
-![GYN needles](https://raw.githubusercontent.com/NA-MIC/ProjectWeek/master/PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/GYN%20needles%20example.jpg)
+<p align="center">
+  <img src="https://raw.githubusercontent.com/NA-MIC/ProjectWeek/master/PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/GYN%20needles%20example.jpg"/>
+</p>
 
-![Multislice view](https://github.com/NA-MIC/ProjectWeek/blob/master/PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/all30_s.gif?raw=true)
+<p align="center">
+  <img src="https://github.com/NA-MIC/ProjectWeek/blob/master/PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/all30_s.gif?raw=true"/>
+</p>
 
 The docker exposed via DeepInfer extension
-![Exposed container](https://github.com/NA-MIC/ProjectWeek/blob/master/PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/local%20docker%20GYN%20needles.png?raw=true)
+<p align="center">
+  <img src="https://github.com/NA-MIC/ProjectWeek/blob/master/PW28_2018_GranCanaria/Projects/NeedleSegmentationDeployment/local%20docker%20GYN%20needles.png?raw=true"/>
+</p>
 
 # Background and References