Update README.md

Author: martastain

README.md

@@ -26,7 +26,7 @@ Key features
 
 ### Media Asset Management
 
-![Metadata editor](https://nebulabroadcast.com/screenshots/nb_screenshot_browser.jpg)
+![Metadata editor](https://nebulabroadcast.com/screenshots/nb_screenshot_browser.jpg?)
 
 Simple and fast media catalog based on [EBU Core](https://tech.ebu.ch/MetadataEbuCore) includes a description of asset
 genre, editorial format, atmosphere, rights, relations, and technical metadata,
@@ -35,7 +35,7 @@ while its very fast search engine makes navigation among media files very easy.
 
 The low-resolution preview allows for editorial review, trimming, and the creation of sub-clips.
 
-![Video preview](https://nebulabroadcast.com/screenshots/nb_screenshot_preview.jpg)
+![Video preview](https://nebulabroadcast.com/screenshots/nb_screenshot_preview.jpg?)
 
 ### Video and audio cross-conversion and normalization
 
@@ -46,7 +46,7 @@ smart frame rate and size normalization and [EBU R128](https://tech.ebu.ch/docs/
 Automatic cross-conversion servers transcode files for playout, web, low-res proxies, customer previews, etc.
 For **h.264** and **HEVC**, Nebula can take advantage of NVIDIA nvenc and leverage the speed of transcoding using GPUs.
 
-![Jonbs view](https://nebulabroadcast.com/screenshots/nb_screenshot_jobs.jpg)
+![Jonbs view](https://nebulabroadcast.com/screenshots/nb_screenshot_jobs.jpg?)
 
 It is possible to start conversions automatically (rule-based) or trigger them from the user interface.
 
@@ -64,7 +64,7 @@ depending on the particular broadcast scheme, Dramatica selects and automaticall
 It is the way to create a playlist for a music station where an algorithm automatically creates a playlist based on a predefined scheme.
 Each clip in the rundown is picked by its editorial format, genre, tempo, atmosphere, etc.
 
-![Detail of a scheduler panel in the web interface](https://nebulabroadcast.com/screenshots/nb_screenshot_scheduling.jpg)
+![Detail of a scheduler panel in the web interface](https://nebulabroadcast.com/screenshots/nb_screenshot_scheduling.jpg?)
 
 ### Playout control
 
@@ -78,7 +78,7 @@ or the web interface, executing graphics or change run order until the last mome
 Playout control module offers a plug-in interface for secondary events execution such as CG, router or studio control,
 recorders control and so on. Right at the operator's fingertips.
 
-![Detail of a rundown panel with playout control interface](https://nebulabroadcast.com/screenshots/nb_screenshot_rundown.jpg)
+![Detail of a rundown panel with playout control interface](https://nebulabroadcast.com/screenshots/nb_screenshot_rundown.jpg?)
 
 ### Publishing